Glaslife Air-Tight Glass Storage Containers, Square Set Convenient - GlasLife containers neatly nest into one another with their lids attached for optimum convenience and organization. Durable - GlasLife containers are made of heavy-duty stain resistant tempered glass that is lightweight yet strong and durable Safe - GlasLife's plastic snap locking lids with silicone seals are made of BPA free materials. Set of 4 Square Glass Containers