Thermarest - Prolite Apex Regular Wide

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.

Features:
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.

Specifications:
R-Value: 3.8
Weight: 790 g
Width: 63 cm
Length: 183 cm
Thickness: 5.0 cm
Packed dimension: 13 x 13cm
Top fabric type: 50D Polyester
Bottom fabric type: 50D Polyester
Foam type: Stratacore Thermal foam