Constructed of dual layers of 650-denier polyester, Otter's XT650 Cabin Ice Shelter is built to handle the worst winter can dish. Double layering helps eliminate condensation inside the shelter. Quilted thermal top retains heat better than its single-layer counterparts. Oversized telescoping square-tube aluminum frame gives unmatched rigidity when conditions turn ugly. Trim-lock system with full skirt cuts down drafts and attaches the roto-molded sled to the shelter in 30 seconds. Padded flip-up bench seat for all-day comfort. Sewn-in crack-resistant windows. Light grey interior increases visibility through the ice.