OVERSIZED, TRIP-PROOF DOOR: The Outbreak 850XD features an oversized, trip proof door that fully zips down to the ice. This means no more catching your foot on the door framework and stumbling with your gear. MORE FISHABLE AREA: Flared, wide-bottom design provides significantly more fishable area than other shelters on the market. STORMSHIELD INSULATED FABRIC: Three-layer, abrasion-resistant, bonded fabric with 80 grams of high-loft insulation, providing maximum warmth and a robust barrier against light/wind penetration. GRAY INTERIOR: Brightens the shelter interior, making it easier to see and fish. STRONGER HUB DESIGN: The Outbreak 850XD features an all-metal ball-and-socket design as well as larger fiberglass poles.