Ultra-light and technical, the Spark Series bags are designed to keep you as warm as possible while minimising packed weight and size. The Sp0 is ideal for mid-summer fast hikes or adventure racing. Sea to Summit's quilted construction minimizes weight and ensures that the down stays in place. The Spark Sp0 can also be used as a liner to improve the thermal performance of another sleeping bag.
Ultra Dry Down UltraDry Down is a PFC-free water-repellant treatment applied to the down used in all Sea to Summit sleeping bags. UltraDry Down retains over 60 % more loft, absorbs 30 % less moisture and dries out 60 % faster when compared to untreated down – which means the down will insulate better even in damp conditions. The treatment also inhibits bacterial growth, making your bag last longer. UltraDry Down treatment is an environmentally friendly application.
Ultralight 7D and 10D material for minimum weight and packing size
RDS-certified 850+ Loft Premium Goose Down with Ultra-Dry