AMCU Bivvi Bag The AMCU Bivvi Bag is designed to provide unparalleled warmth and dryness during frigid winter nights in the field, whether deployed operationally or used for expedition and camping purposes. Manufactured using GAMMATEX fabric, a cutting-edge three-layer technical laminate comparable to Gore-Tex, this bivvi bag delivers full weather protection without unnecessary bulk. The 100% waterproof and windproof construction shields the user from harsh environmental conditions while remaining breathable, allowing moisture to escape and reducing internal condensation. This balance of protection and comfort makes the bivvi bag suitable for extended use in cold and wet environments. Designed with practical field use in mind, the bivvi features a built-in mozzie / bug mesh with a separate zipper, allowing ventilation and insect protection without compromising coverage. The main flap is secured with a two-way zipper and reinforced with a return storm flap to enhance weather resistance during adverse conditions. Lightweight and compact, the AMCU Bivvi Bag packs down into the included stuff sack, making it easy to stow in packs, vehicles, or field kits. Key Features 100% waterproof and windproof construction Breathable 3-layer GAMMATEX technical fabric Lightweight design for field and expedition use Built-in mozzie / bug mesh with separate zipper Two-way main zipper with return storm flap for added weather protection Includes compact stuff sack for transport and storage Technical Notes Sizes Medium Length: 205 cm Width: 80 cm (head), 70 cm (foot) Weight: 745 g Large Length: 230 cm Width: 105 cm (head), 80 cm (foot) Weight: 980 g