The Equipment Shop at the American Alpine Institute

The lightest 4-season sleeping pad available.  The Prolite 4 is perfect for mountaineering, backpacking, roadtripping and traveling.  Tapered ergonomic design rolls up incredibly small and a nonslip material underneath helps keep your pad where you want it. 

Small:482 g (1lb 1 oz)  20" x 47" x 1.5"

Regular: 680 g (1lb 8 oz) 20" x 72" x 1.5"

Large: 936 g (2lb 1 oz) 25" x 77" x 1.5"