Snugpak Bivvi Bag WGTE Color:Black This means that they won’t

This means that they won’t suffer from internal fogging if you take them from one extreme of temperature to another

Gas not included—use with Primus Power Gas

Insulation: 133g/135g PrimaLoft Gold® with a soft-touch matrix inner lining

5cm DofE Yes

Snugpak Bivvi Bag WGTE Color:Black This means that they won’tWith a small volume and exceptional lightweight properties, the Bivvi bag WGTE can be used as the bare minimum for wild camping in the summer or used in conjunction with a sleeping system and air mat for planned camps all year round. A 5000mm Hydrostatic Head for waterproof and windproof durability, creating an enclosed micro climate that increases humidity and maintaining body temperature through the protection of evaporative and convection heat