Sleep systems

Trekking Peaks

All three Systems combine clothing warm enough for the summit with lightweight Hispar sleeping bags. 'System 1' shows the lighter bag (Hispar 400) with the warmer clothing (Hispar). In Systems 2 & 3 it’s the warmer Hispar 500 bag with the lighter Rondoy clothing. All three options offer more than enough warmth, day and night.

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The Hispar clothing is rated for -30°C daytime use, well warm enough for your peak. Wear it inside the lightweight Hispar 400 and the combination will take care of your nights right down to -29°C. This system is based on a lighter bag and warmer clothing than System 2: overall performance is similar.
The Rondoy clothing is rated for -20°C daytime use, warm enough for your peak. Wear it inside the Hispar 500 and the combination will take care of your nights right down to -33°C. This system is based on a warmer bag and lighter clothing than System 1: overall performance is similar.
The simple Filler bag boosts the Hispar 500 to -25°C performance in this system. But it can also double up with the Rondoy jacket to take the rating to below -30°C, as well as working as an emergency item on the climb.