... 2) High quality :Professional high level artificial leather with Marine Grade top vinyl.and 100% high density insulation foam.3 ... feature as follows :1) High Quality , Excellent Workmanship , Durability2) Marine Grade top vinyl reinforce the function of Waterproof ,Anti-Mildew ... ,UV resistance10) Guarantee for 3 yearsPACKINGclose shotDifferent color marine grade super strong inground swim spa cover