Double Layer Strong Insulated Body 2. A 20 mm PolyUrethane Foam 3. Tough & Impact Resistant Exterior 4. Ice Box is FDA Approved and BPA-Free and therefore safe to even store open food or fruits/veggies. Basically Pinnacle Prudence 11 L is a Perfect Solution to keep Food, Drinks & Refreshments cold for a longer period.PERFECT FOR: Pinnacle Prudence 11 L is