What Our Gearhead(R) Experts Are Saying:"I've used the Eclipse All-Season pad on winter camping trips and alpine missions-it's incredibly warm and way more comfortable than most insulated pads I've tried. The Laylow valve is great for dialing in firmness, and the baffling keeps me centered all night. Bonus points for how small it packs down for a four-inch thick pad."We expect more from a sleeping pad when the temps drop and the trail runs long-and the Eclipse All-Season Sleeping Pad from NEMO doesn't disappoint. With 4 inches of plush, body-contouring air cushioning, it turns any tent floor into a stable, cradling surface that keeps us centered and comfortable through the night. The included Vortex(TM) pump sack makes inflation quick and easy, even at altitude, and keeps moisture out of the pad's interior. Built with spaceframe baffles for extra stability and low-stretch support, the Eclipse features two layers of Thermal Mirror(TM) insulation for reliable four-season warmth and an impressive R-value of 6. 0. The Laylow(TM) Zero Valve allows for fine-tuned firmness adjustments on the fly, so we can get just the right feel whether we're recovering after a long push or resting before a summit attempt. It's built for every season, and every adventure.