3 piece set - Replacement foam for Pelican 1500. Product Description: Replacement foam inserts for Pelican Case 1500. Includes: 1 Pc. Convoluted foam lid, 1 Pc. Solid Pad 3.40" Thick - (Not Pick N' Pluck), 1 Pc. Plain bottom pad .75" Thick. Overview: Polyurethane foam is the most common type of foam used in cases. The foam is soft enough to provide flexibility for items, but also dense enough to provide cushion for even the heaviest of items. Technical: Polyurethane is open cell which means air and water can flow freely throughout the foam. The material weighs about 1.2 - 1.3 lbs per cubic foot.