From bikepacking through mountain ranges to multi-day trail running, the featherlight Ultrasphere 4.5 sleeping mat offers peerless warmth for when you can’t compromise on weight. Its ground-breaking design includes two layers of heat-reflective TILT, which reduce radiant heat loss, and offset air chambers that trap heat within the construction, allowing you to recharge comfortably without the need for high-volume insulation.
Ultrasphere 4.5 Sleeping Mat
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