Nanga Mini Sleeping Bag Phone Case - Coyote Size:One Size it has a WaveCore construction

it has a WaveCore construction to provide twice the warmth of an uninsulated air mattress

With a comfort rating of 4 degrees

which gives increased freedom of movement

A premium slice of Japanese outerwear

these fully functioning mittens offer fold back finger and thumb covers

Nanga Mini Sleeping Bag Phone Case - Coyote Size:One Size it has a WaveCore constructionIts not just you that doesnt function when youre cold, the same can be said for your mobile device. This down bag is designed to keep your phone warm in cold temperatures, and will fit most sizes, with a draw cord adjustable hood. A branded carabiner clip means it can be attached to a belt loop or bag.