LocknLock Clover 3-Tier Bento Lunch Box Set with Bag & Cool Pack (Dark Gray) Excellent airtight and watertight with patented 4-hinge locking system with silicone sealing ring. BPA free material for strong durability and safety. Light and durable, transparent as glass. Microwave, freezer and dishwasher safe. [ 4 Divided Box(1EA) : 1200ml(41oz) ] + [ Box(2EA) : 1200ml(41oz) ] + [ Bag(1EA) ] + [ Cool Pack ]