Thick lids are designed to ensure top performance and temperature retention. Nylex Latches eliminate sharp edges won't rust, bend, or dent. Compact size offers the benefits of Nylex latches without increasing counter space. Nylex latches are screwed into steel reinforcement plates for longer life features spring action faucet for dripless service. Durable scratch resistant polyethylene exterior. Reinforced, tight fitting lids with O ring seals prevent leaks and provide increased heat retention. Convex lid design prevents leaks during use as pressure increases easy grip, formed handles for transporting. NSF listed.