Crystal Classics salad bowls are made from RPET, providing excellent structural strength and crack resistance. Stands up to cold temperatures and wont break even when dropped. Inner/outer double seal provides a leak resistant seal. Large textured tabs on the bowl and lids, provide for easy opening by customers. An interlocking feature on the bowl and lid assures positive stacking on display or in the bag. Crystal Classics bowls provide the perfect showcase for your product.