Sleep Systems for Everest (2024)

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Sleep Systems for Everest (1)

This system is a serious weight-saver. Wearing your down suit inside the Hispar 600 moves the performance rating right up to -47°C (the bag in the system is the Wide version to make sure that the suit can loft fully). Yet the Hispar bag weighs around 600g (21.2oz) less than a standard bag rated to -47°C and packs down to about two-thirds the volume. The Hispar 600K has even more impressive stats.

Sleep Systems for Everest (2)

Like System 1 this system is a serious weight-saver. Wearing the Xero clothing inside the Hispar 600 moves the performance rating right up to -47°C (the bag in the system is the Wide version to make sure that the down clothing can loft fully). Yet the Hispar bag weighs around 600g (21.2oz) less than a standard bag rated to -47°C and packs down to about two-thirds the volume. The Hispar 600K has even more impressive stats.

Sleep Systems for Everest (3)

Wearing your full Expedition Double Suit (the warmer version) inside the Hispar 600 moves the bag’s performance rating right up to -50°C (-44°C with the standard version Double Suit) (the bag in the system is the Wide version to make sure that the suit can loft fully). Using just the inner down suit inside the Hispar 600 gives a full system sleep rating of -33°C. The Hispar bag weighs around 800g (28.2oz) less than a standard bag rated to -48°C and packs down to about two-thirds the volume. The “K-Series” Hispar 600 has even more impressive stats.

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Sleep Systems for Everest (2024)
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