Thermarest Apex

Boasting an unrivaled warmth-to-weight ratio, the Apex is the pinnacle of light and stable self-inflating comfort.

The newest addition to our tried-and-true ProLite family adds warmth and thickness without adding additional weight. The lightweight Apex offers year-round warmth and comfort thanks to its unique StrataCore construction. The 5cm thick mattress ensures that you stay comfy during your backcountry backpacking and camping adventures. Stuff sack included.

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 Year-Round Comfort: The best warmth-to-weight ratio of any self-inflating mattress.
Comfy Self-inflating Foam: Expanding foam core self-inflates; top off with air for personalized firmness on 2 in (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.
NEW 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.

R-Value: 3.8
Thickness: 5.0cm
Top fabric type: 50D Polyester
Bottom fabric type: 50D Polyester
Foam type: Stratacore Thermal foam

Regular:
Weight: 630g
Width: 51cm
Length: 183cm
Packed dimension: 28 x 12cm

Regular Wide:
Weight: 790g
Width: 63cm
Length: 183cm
Packed dimension: 13 x 13cm

Large:
Weight: 850g
Width: 63cm
Length: 196cm
Packed dimension: 33 x 13cm