ProLite™ Apex™ Sleeping Pad

  • Therm-a-Rest ProLite Apex
  • Therm-a-Rest ProLite Apex
  • Therm-a-Rest ProLite Apex Packed
  • Therm-a-Rest ProLite Apex Contents
  • Therm-a-Rest ProLite Apex
  • Therm-a-Rest ProLite Apex
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Therm-a-Rest

ProLite™ Apex™ Sleeping Pad

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The pinnacle of light and stable self-inflating comfort paired with unrivaled warmth.
  • StrataCore™ Construction: Yielding the best warmth-to-weight ratio of any self-inflating mattress, StrataCore uses a continuous layer of thermal foam nestled between alternating ridges of air and foam.
  • Lightweight Comfort: Our warmest ProLite ever allows three-season adventuring without weighing down a pack.
  • Rugged, Self-inflating Foam: Expanding foam core self-inflates; top off with just a few breaths for personalized firmness on 2 inches (5 cm) of StrataCore loft.
  • Easily Fits In Your Pack: Packs down small to easily find a place in your pack during fast and light adventures.
  • WingLock™ Valve: Our intuitive and dependable valve maximizes air flow for easier inflation and quicker deflation. Wings toggle for one-way inflation to save breath.
  • Multiple Sizes: Offering a range of sizes, including a spacious regular wide, allows you to pick a length that best suits your adventure needs.
  • Stuff sack included
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Description

For lightweight self-inflating support, the ProLite Apex brings packable performance and legendary Therm-a-Rest support. The self-inflating foam measures 2 inches (5 cm) and features our StrataCore construction, a design that provides the best warmth-to-weight ratio of any self-inflating foam construction. The ProLite Apex 3.8 R-value allows adventurers to stave off the cold during three-season pursuits. The packable self-inflating pad features the high-performance WingLock valve, which has three-times the airflow rate of the classic valve thanks to a larger opening and one-way inflation. Like all Therm-a-Rest pads, the ProLite Apex is made in market to ensure quality and minimize environmental impact. The pad includes a compact stuff sack.

Tech Specs

Regular Regular Wide Large
R-Value 3.8 3.8 3.8
Weight 1 lb 6 oz (0.62 kg) 1 lb 12 oz (0.79 kg) 1 lb 14 oz (0.85 kg)
Width 20 in (51 cm) 25 in (64 cm) 25 in (64 cm)
Length 72 in (183 cm) 72 in (183 cm) 77 in (196 cm)
Thickness 2 in (5 cm) 2 in (5 cm) 2 in (5 cm)
Packed Dimensions 11 in x 6.8 in (28 cm x 17 cm) 13 in x 7 in (33 cm x 18 cm) 13 in x 7 in (33 cm x 18 cm)
Top Fabric Type 50D Polyester Print 50D Polyester Print 50D Polyester Print
Bottom Fabric Type 50D Polyester Print 50D Polyester Print 50D Polyester Print
Foam Type Urethane Foam Urethane Foam Urethane Foam
What's Included Stuff Sack Stuff Sack Stuff Sack
Country Of Origin Made in Ireland Made in Ireland Made in Ireland
Color Heat Wave Heat Wave Heat Wave
SKU 14251 14252 14253

Video Gallery

FAQs and Documents

What is solution-dyed fabric?

Solution-dyed fabric uses pre-dyed fibers to minimize the water and energy required to color the fabric. This means that color, or pigment, is added to the material producing the completed fabric. Compared to conventional batch-dyeing—the process of dyeing already produced fabric— solution dyeing requires significantly less water and energy, reducing waste and carbon emissions.

Will the NeoLoft fit in my tent?

Check the floor dimensions of your tent to see if they will accommodate the extra width of a NeoLoft pad. Lengthwise, every NeoLoft size will fit in the typical backpacking tent.

The floor dimensions of most 2-person backpacking tents are typically 50-52 in (127-132 cm) wide by 88-90 in (223-229 cm) long. If your 2-person backpacking tent is 52 in (132 cm) wide, then it will fit two Regular Wides or two Longs, or one of each. If your 2-person backpacking tent is 50 in (127 cm) wide, two of the wider NeoLofts will bulge slightly against the sides, but it will easily fit one Regular Wide or Long and one Regular.

Why is the NeoLoft wider and longer than other pads even though they are the same size (Regular, Regular Wide, Large)?

A Regular Wide NeoLoft measures 26 in x 73 in (66 cm x 185 cm), whereas a Regular XLite™ NXT measures 25 in x 72 in (64 cm x 183 cm). The NeoLoft’s 3D construction utilizes a sidewall band that attaches the top and bottom fabric. The sidewalls bulge out a bit when inflated, adding a touch of extra length and width.

Is the NeoLoft™ a NeoAir® sleeping pad?

No it’s not; we borrowed the ‘Neo’ moniker due to similarities in the internal constructions of the NeoLoft and the NeoAir pads. The NeoAir uses Triangular Core Matrix construction and the NeoLoft has ContourCore Matrix construction.

What’s the difference between Triangular Core Matrix™ construction and ContourCore Matrix™ construction?

Optimized for industry-leading warmth-to-weight ratios, Triangular Core Matrix is used inside our lightest, most compact sleeping pads. ContourCore Matrix uses the same thermally efficient design (two stacked layers of triangular chambers that disrupt convective heat loss) but incorporates a more flexible urethane material that allows for a thicker pad and superior contouring support. It’s heavier and less compact but maximizes comfort.

How should I inflate my self-inflating pad the first time?

For best performance, inflate your self-inflating pad with air by breath or pump and sack and leave the mattress fully inflated for 2-4 hours before your first use.

How do I inflate my self-inflating pad during winter?

In freezing conditions, avoid breath inflating your self-inflating pad. The moisture from your breath can freeze inside the mattress. The mattress may self-inflate slower in cold weather. Use a pump sack or electric pump if the pad needs additional air.

How Does a Self-Inflating Sleeping Pad Work?

Self-inflating sleeping pads rely on the compressible and rebound-able open cell foam cores to self-inflate. The atmospheric pressure around the pad pushes air into the rebounding open cells when the valve is opened. Check out our blog post for more information.

How Long Should it Take for My Pad to Self-Inflate?

Generally, it takes 5-15 minutes for any of our self-inflating pads to inflate on their own. That 10-minute variance range is probably due to one of the following factors: core construction, trained compression, elevation and temperature. We find the most significant factor is trained compression (i.e. if your pad is new and has been factory rolled on the shelf for some time or stored rolled up for a few months). Check out our blog post to find out why.

Why Doesn’t My Self-Inflating Pad Inflate All the Way?

Self-inflation begins when the valve is opened and ends when equilibrium is reached between the atmospheric pressure outside the cells and the air pressure within the cells pushing the other way. In our experience, most users’ comfort level requires more air than the equilibrium level, which is why self-inflating pads don’t inflate “all the way.” Check out our blog post for more information.

How should I store my sleeping pad?

  • Self-Inflating: We recommend storing the mattress unrolled and fully inflated in a dry place with the valve open. This will ensure the foam self-inflates faster when camping. Storage for a prolonged time in a damp space may cause mildew damage which is not covered by our Limited Lifetime Warranty.
  • NeoAir: We recommend leaving the valve open and storing your mattress rolled tight in a stuff sack to protect it from dirt and sharp objects.

What is the best way to clean my sleeping pad?

Regular cleaning will extend the life of your mattress, especially if you sleep in direct contact with its surface.

Do not put your mattress in the washing machine. Cleaning with a hose or in a bathtub is best. Do not forget to close the valve while washing. For general cleaning, a quick scrubbing with Formula 409®, BioClean™ All-Purpose Cleaner, or other general household cleaner is best.

Watch the video: How to Care for Your Therm-a-Rest® Mattress

For tree sap, spot clean with a cotton rag soaked in rubbing alcohol. This will take some work and sap will likely leave a stain. However, a dusting with talc or baby powder when you are done should eliminate any residual stickiness.

What should I do if I think my sleeping pad is losing air?

If you think that your NeoAir or self-inflating sleeping pad are losing air, it’s possible that you have a puncture in your pad. If you want to repair your pad at home, check out this blog post. If you’d like to send your pad to our Seattle repair shop, head over to our warranty page.

How warm is my sleeping pad and what is the ASTM testing standard?

ASTM F3340-18 is a new testing standard that provides R-value ratings for sleeping pads. While Therm-a-Rest has always used R-value to rate our sleeping pads, this new standardization will allow campers to make “like-for-like” comparisons with our competitors pad. Head to a blog for an in-depth explanation.

What is the benefit of stretch knit fabric on my sleeping pad?

For comfort-conscious campers, we use stretch knit fabric for unrivaled support and superior next-to-skin feel. The fabric conforms to your body to provide supple support as you enjoy your nights under the stars.

Can I replace the valve on my Therm-a-Rest mattress?

  • Yes. Classic Valve Replacement Kits can be purchased here.
  • WingLock™ Valve Replacement Kits can be purchased here
  • If you’re having issues with your TwinLock™ Valve, our warranty & repair team is here to help. Please visit thermarest.com/warranty for more info.
  • If you’re not sure which valve you have please refer to the graphic below:
    • Valve Type

How do you inflate and deflate sleeping pads with a WingLock™ Valve?

  • Watch this video for step by step instructions on how to use the WingLock™ Valve
  • To Inflate the WingLock™ Valve:
    • Unroll your sleeping pad and open the valve cap by twisting it counter-clockwise.
    • Use a pump sack or breath to inflate your pad. The one-way valve will prevent air from escaping.
    • Continue inflation until the mattress is fully inflated and close the valve by twisting the valve cap clockwise.
  • To Deflate WingLock™ Valve:
    • Open the wings to open the one-way valve.
    • Open the valve cap by twisting counter-clockwise, allowing air to escape
    • Roll the pad toward the valve end, pushing any remaining air from the pad.

Can I replace my old Therm-a-Rest valve with a new WingLock™ Valve or TwinLock™ Valve?

No. WingLock™ or TwinLock™ Valves cannot be installed on products that originally included a Classic Therm-a-Rest Valve. If you’re not sure which valve you have please refer to the graphic below:Valve Type

What makes the WingLock™ Valve different from Classic Therm-a-Rest Valves?

  • Faster Inflation: Larger valve opening and one-way inflation allows three times faster airflow than our classic valve (with a pressurized air supply the Classic Valve flow rate measures to 2.2 standard cubic feet per minute, where the WingLock Valve flow rate measures to 6.5 standard cubic feet per minute, or a 295% difference).
  • One-Way Inflation: Unique design keeps air from escaping during inflation.
  • Deflation “Wings”: When it’s time to break camp, open the valve and twist the wings to deflate your pad twice as fast as our classic valve.
  • Watch this video to learn more

What makes the TwinLock™ Valve different from Classic Therm-a-rest Valves?

For our larger pads, we developed the TwinLock™ Valve which utilizes two one-way valves: a one-way inflation valve and one-way deflation valve that allows for five times faster deflation than our classic valve. Watch this video to learn more.

How do you inflate and deflate sleeping pads with a TwinLock™ Valve?

  • Watch this video for step by step instructions on how to use the TwinLock™ Valve
  • To Inflate TwinLock™ Valve:
    • Unroll your sleeping pad and open the “IN” valve by twisting it counter-clockwise.
    • Use a pump sack or breath to inflate your pad. The one-way “IN” valve will prevent air from escaping.
    • When the mattress is fully inflated and close the valve by twisting the valve cap clockwise.
  • To Deflate TwinLock™ Valve
    • Open the “OUT” valve by twisting counter-clockwise.
    • The one-way “OUT” valve will keep air from flowing back into the pad.
    • Roll the pad toward the valve end, pushing any remaining air from the pad.

Shipping and Returns

Free Shipping on Orders over $50

We offer complimentary FedEx Ground shipping for orders over $50. Learn More

Orders Shipped in 1-2 Days

We do our best to get all orders out within one business day, Monday through Friday. Learn More

No Hassle Returns

We accept returns within 30 days of purchase. All returned items must be in new condition. Please be sure no dirt, grass or pet hair is on the item you are returning. Learn More

Limited Lifetime Warranty

Every piece of Therm-a-Rest gear is designed to endure the rigors of your time in the backcountry. We offer a Limited Lifetime Warranty on all products, except electronic devices, which have a 2-year Limited Warranty. Visit our Therm-a-Rest warranty page for more info.

Portrait of our repair shop crew

Overall rating: 3.942029 / 5 from 69 reviews.

AI Generated Review Summary

The ProLite™ Apex™ Sleeping Pad offers a mix of comfort and stability, though some users report issues with warmth and durability. It is generally praised for its self-inflating feature and overall quality, but concerns about cold nights and structural integrity persist.

Summary topics

  • Comfort and Quality: 7%
  • Sleep Experience: 5%
  • Overall Pad Satisfaction: 49%
  • Mattress Durability: 7%

Review topics: [fit, size, model, value, weight, quality, material, works, comfort, air, thickness, pad, width, mat, sleep, experience, trips, valve, use, ground, stuff sack, prolite, mattress, properties, cushion, ribs, camping, insulation, engineering, noise].

Review highlights

  • "By making a 4-season self0inflating pad this thick, there's no need for me to keep my noisy NeoAirs anymore." — Daniel C.
  • "Takes a lot of space in an already full pack but that’s a small downside for a good nights sleep in the back country." — Mark T.
  • "perfect sleeping pad with no real weaknesses" — Lt. D.

Reviews

Very good when functioning properly

"Terrible, do not buy. I have had three and all have failed whilst I've been on tour. The first developed a faulty valve so deflated overnight. Replaced by a great retailer. The second and third mats both de-laminated; creating bulges and making them unusable. Tadpole profiles if you can picture it. I think the problem is down to contact with moisture on my tent's groundsheet but I dont know that for a fact. Both mats were stored slightly inflated under a bed. The second mat was again replaced by a retailer but frankly I don't have the audacity to return the third one. When the mats worked they were comfortable, warm and easy to inflate and deflate. I cannot however recommend this mat and will buy a different model/brand for next season"

— Ian (1/5)

~ Cascade Designs ProLite Apex™ Sleeping Pad ~

"A great quality backpacking/camping air mattress here! Just the thickness that I like it at. And the upgraded valve works very efficiently at adding/ manipulating the air content of the mattress. The outer material seems to be of pretty robust quality too. . though I always use it inside a tent, never directly on the ground (I’m here in Arizona, lol 🌵🏜️)."

— Wesley S. (5/5)

Very satisfied

"Good weight, not too loud. Applicable for car camping and backpacking. Size is bigger than backpacking pads but not a deal breaker. Been using it on and off for 3 years"

— Warren L. (5/5)

USA!

"Thank you I tried several china brands from Amazon that bust seams on the first fill. This pad has gone through a dozen nights of sleep without any issues. Feels like a buy-it-for-a-lifetime product."

— Anthony F. (5/5)

Very good sleeping pad!

"Good quality! Does not take alot of breaths to fill it up like older ones did."

— Ronald H. (5/5)

Great pad!

"I love it. Comfortable, plenty wide and warm"

— Lynda M. (5/5)

Excellent

"Excellent sleeping pad. Light weight, compact, perfect thickness for an enjoyable rest."

— Jeff F. (5/5)

Great pad! Bare skin doesn't

"Great pad! Bare skin doesn't stick to this pad. Not sure what magic material works like that, but I like it. Getting the wider one makes a big difference in being able to move a little without finding the ground."

— Travis T. (5/5)

Very disapointed

"Just bought pro lite apex on 10/14/23, used a couple time, internal seperation at head. Every time I add more air I get more seperation. So my butt is on the ground and my head is sticking up. Sad part is I have more days left, nothing worst than having it fail while on a trip. Useless when it doesn't even last a year."

— Andy (1/5)

Joseph

"Unfortunately a very disappointing lifespan. I bought this three years ago and have perhaps used for five camping trips, never longer than a couple of days. Always kept the mat well cared for and never overinflated. Unfortunately I just came back from a camping trip up Snowdonia annd around 4 am was woken to the noise of the septum within the internal structures of the mat breaking. This caused a large and uncomfortable lump in the lower lumbar region of the mat. Fortunately, this was only a one night camping trip and I accepted a cold night of no sleep without a functioning mat . Prior to this issue, I had thought the mat seemed very robust and comfortable, but given the price, I would expect it to last much longer!"

— Joseph (2/5)

Q&A