EASY TO USE - Simply place lid on rim and gently press for an airtight, leak-proof suction seal.;KEEPS FOOD FRESH - These attractive food covers are just perfect for cooking, storage and leftovers, picnics and table settings. FDA certified Food Grade Silicone, BPA free;GREAT GIFT IDEA for anyone who cooks. Skip the plastic wrap and foil! Safe in oven, microwave, stove top, and fridge from -40F to 450F in sizes 5,6,7, 7.8,and 10.2;QUICK CLEAN AND STORE - Just wipe with mild cleanser or use the dishwasher. Easy-grip interlocking lids save you space and reduce clutter.;USES ABOUND - Fits most smooth rimmed containers including stainless, metal, plastic and glass up to 10 for mugs, pots, glasses and bowls. 100% Satisfaction Guarantee