The ultralight and technical Spark SpII is designed to keep you as warm as possible while minimising packed weight and size.
The contoured mummy design offer efficient thermal insulation and utilises RDs 850+ Loft premium goose down. The ULTRA-DRY Down water-repellent treatment protects the down from external moisture and condensation from the inside of the bag, virtually eliminating the negative effects moisture has on down and makes this bag ideal for hard-alpine or adventure racing bag, where every gram is counted and down has never been a viable option.
Vertical box baffles in the torso area accommodates extra down and boosts warmth around the core, vertical baffles on chest optimises positions of down to prevent it moving during use and the lower part of the bag uses a sewn through horizontal baffle construction to minimise weight. Draft tube prevents heat loss through the zipper and a integrated hood draft collar keeps out the cold air and the half zip with two sliders aids access and allows ventilation from mid-section of bag.