Rab Ultrasphere Sleep Mat 5.5R Value socks Proven in the elements and

Proven in the elements and ready to withstand even the most rugged conditions

TPU toe protection

Increased stretch provides a snug yet comfortable fit without restriction

with a durable water repellent (DWR) finish made without intentionally added PFAS to shed moisture

we choose gear that works both on the trail and in everyday life

Rab Ultrasphere Sleep Mat 5.5R Value socks Proven in the elements andWhen both warmth and low weight are crucial, the Ultrasphere 5 is the ultimate packable, featherlight air mat, honed for fast paced exploring in demanding mountain conditions. Its groundbreaking design includes two layers of TILT, which boosts the mats warmth to weight ratio by reflecting heat back towards your body, all for a fraction of a gram. It also features new offset air chambers that trap heat within the construction, allowing you to recharge