Food Grade 304 Stainless Steel: Made from durable 304 stainless steel, these stylish 6L/12L airtight food storage containers will enhance your kitchen space. Canister is very light. With airtight lid and comfortable handles, this kitchen storage canister is easy to open and close. Airtight Canister: This food oil sugar milk organizer is an airtight container. Strong locking clips and rubber seals provide an airtight seal. Air-tight containers reduce the loss of flavor from the contents stored inside.