Stoic bivy suit-brand new, never worn from back country online store Designed for campers who want to explore their camp's surroundings without leaving the warmth of a sleeping bag, the Bivy Suit from Stoic is one of our best creations yet. We crafted this one-piece sleeping bag suit so that we really never have to take it off, thanks to the cooling two-way front zip and zippered thigh vents, and the pullover hand and feet covers that retain extra warmth when we need it. Because this innovation has become such a popular style, we extended the sizing so even more adventurers can appreciate the Bivy Suit's toasty cocoon.