What Our Gearhead(R) Experts Are Saying: "My go-to for cold mountain trips-warmth that punches above its weight and quieter sleep than old NeoAirs."We count ounces without sacrificing warmth on the Therm-a-Rest NeoAir XTherm NXT. Efficient insulation and a supportive structure keep us comfortable on frozen platforms and windy ridgelines. The updated, quieter feel makes long nights more restful so we're ready for early starts.