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Therm-a-Rest ProLite Apex Self-Inflating Sleeping Pad

Therm-a-Rest ProLite Apex Self-Inflating Sleeping Pad
$184.95 - $194.95
Size: Select size
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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 Thermarest 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.

Weight (Regular): 620 g / 1.38 lbs
R-Value: 3.8 (3 Season)
Thickness: 5 cm / 2 in

  • 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
Best Use Backpacking
Pad Type Self Inflating 
Pad Shape Mummy
R-Value 3.8
Regular: 620g / 1.38 llbs
Large:  850g / 1.88 lbs
Regular: 183 x 51cm / 72 x 20"
Large: 196 x 64cm / 77 x 25"
Pad Thickness 5.0 cm / 2.0"
Packed Size
Regular: 33 x1 8cm / 13 x 6.8"
Large:  28 x 17cm / 13 x 7"
Whats Included Stuff Sack
Limited Lifetime 
Pads are warrantied for the life of the product against defects in materials and workmanship.
Never set up your mattress on rocks or sharp surfaces.
Use ground cloth beneath mattress unless sleeping in a tent
Do not expose mattress to flame or sparks
Do not pressurize mattress with high-pressure pumps
Do not contaminate the mattress with Deet-based insect repellants, sunscreen, or chlorine
Do not expose mattress to long periods of direct sunlight. Ultraviolet rays gradually destroy the coated fabric.
Always carry the air mattress in a stuff sack or other protective bag.
Keep mattresses away from your pets. Dogs love to chew the valves, and cats like to sharpen their claws on the mattress
Do not leave a mattress inflated with valve(s) closed in a car or tent on a hot day
Periodic cleaning is recommended to prevent food, oils or other materials from prematurely degrading your Therm-a-Rest mattress
Wash in a tub, using a soft bristle brush and any mild household degreasing cleaner or detergent.
Storage - NeoAir
Your air mattress can be completely deflated and rolled tight for storage
It is recommended to leave the valve open and store your mattress in a stuff sack to protect it from dirt and sharp objects
Storage - Self Inflating 
Your air mattress can be completely deflated and rolled tight for storage


Therm-a-Rest ProLite™ Apex™ Sleeping Pad

Therm-a-Rest Valves: WingLock™ and TwinLock™ Valve Overview

Therm-a-Rest: How to use the WingLock™ Valve

Part Numbers

Option UPC MPN Store SKU
Regular 040818132562 13256 SLE444589202
Regular Wide 040818132579 13257 SLE488242422