Silicone Suction Cover for Coffee and Tea Cup, Cat Food Can Lid or Jar Lid (Set of 4) Cute air-tight covers for tea cup, coffee mug, storage container, glass jar, pet food and more! Durable single piece construction will not break or tear. FDA-approved, BPA-free, 100% silicone is dishwasher safe. Holds tight with a gentle press and lifts several pounds (although not intended as a carrying handle) 100% Satisfaction guarantee. 1 year manufacturers warrantee.