The Sea To Summit Spark Pro sleeping bag boasts several technical qualities to ensure comfortable nights.
Equipped with R.D.S 950+ Loft down fill, it offers an optimal weight-to-warmth ratio for ideal thermal insulation and a compact format.
The 10-denier nylon fabric is waterproof and breathable to ensure your comfort.
The Free Flow Zip system allows better temperature regulation thanks to adjustable zippers.
Key features of the Sea To Summit Spark Pro R sleeping bag
The Ultra Dry Down treatment provides better water resistance in wet weather.
The QuiltLock system uses the snap locks located at the shoulders and feet of Sea to Summit sleeping bags, as well as the foot box of the quilt and the quilt straps, to attach a quilt to the sleeping bag. This adds thermal performance and versatility to your sleep system: your integrated quilt now works for ultralight summer adventures and transforms your three-season bag into a four-season sleep system.
The Free Flow Zip system offers temperature regulation and multiple sleeping bag configurations for greater freedom outdoors. The minimalist 1/4 length zips on the side and foot area are ultra-lightweight, thus adding versatility and comfort.