Carlisle Cateraide polyethylene insulated ice caddy with 4 swivel casters. All offer extra thick foam insulation to maintain cold temperatures. Rounded inside corners and removable lid for thorough cleaning. Stainless steel, reinforced hinges prevent rusting. Easy rolling, heavy-duty casters; NSF listed. Nylex latches eliminate sharp edges; won"t rust, bend, or dent. Optional ice caddy shelf for water drainage is available separately. NSF listed. Material - shell: polyethylene (PE). Material - insulation: polyurethane. Measures 18-3/4-inches interior length by 18-3/4-inches interior width. 20.62-inches depth. Measures 28-inches length by 22-1/4-inches width by 28-3/4-inches height.