Rab Ultrasphere 45 Option:Regular while the stitch-through baffle back

while the stitch-through baffle back and ground-level side seams enhance durability and comfort

Elasticated binding at the cuffs and hem keep the warmth in and the cold out

The Cerium offers superb mobility and and can be used as either a warm mid layer or as an outer layer in cooler conditions

Weighing just 314 grams

20D RS Nylon outer with mechanical stretch on body

Rab Ultrasphere 45 Option:Regular while the stitch-through baffle backRab's TILT heat reflective technology which bumps up the warmth while adding a negligible amount of weight. The Ultrasphere 4. 5 is designed to be used in conjunction with Rab's Mythic Ultra 120 Modular sleeping bag, but is actually a great, superlight and warm mat on its own. Inside the Ultrasphere 4. 5 is two layers of Rab's TILT reflective film which reduces radiant heat loss without adding weight or bulk and does not rustle at all like other heat