The Bull XL Box Blind by Muddy features a heavy-duty roof and solid floor. The THERMA-TEK innovative structural insulated design provides ultimate thermal control, scent control, and noise control. The walls are formed by bonding together exterior grade UV protected PVC for protection, 1.5 lb. density foam for thermal control, tempered hardboard for scent control, and marine carpet for a sound barrier. Dark color carpet keeps you hidden, plus the floor carpeting is removable for easy cleaning. The full-size keyed door allows easy entry, even when wearing a pack. The windows have an EZ one-hand design with ultra-quiet latches. The shelf features molded threaded inserts for accessory use.