Technique And Material Indestructible Rotomolded Thermoplastic Construction with commercial grade insulation provides a longer ice retention time. With up to7 day ice retention! Molded into the lid to keep drinks from spilling. Dual Built-In Stainless Steel Lock-plate Bottle Openers. Built-in UV resistance helps prevent plastic breakdown and fading caused by sun exposure. Easy cleanup; With leakproof channel drain plug