Their three tier siliconesteamer is designed like the Chinese classic bamboo steamer, but uses 100 % silicone which is both hygenic and easy to care for. The lid creates a vacuum seal and only allows a small amount of steam to escape as it does it's job - creating plenty of heat to steam poultry, fish, meats, veggies, dumplings and more. Complete instructions on use and care are included. There are three sizes and three tiers: 23.2*19.2*7.2 (1 tier ) 23.2*19.2*12.9 (2 tiers) 23.2*19.2*18.3 (3 tiers) If you have any requirements concerning silicone kitchenware, pls feel free to contact me by lilyATchan-siDOTcom