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+++ Explore our new SLEEP BUILDER and get yourself a voucher! +++

Technical Features

750+ Loft Ultra-Dry Down

750+ Loft Ultra-Dry Down

The second highest-lofting down used in any of Sea to Summit’s sleeping bags. 750+ Fill Power indicates that one ounce (30g) of down will re-expand to over 750 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating – important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) – a copy of the certification is supplied with every Sea to Summit sleeping bag.

The down is responsibly sourced and RDS certified and treated with the environmentally-friendly Ultra-Dry Down treatment.

All of which means you can rest easy.

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