Klean Kanteens keep kids rustic and fabulously green. They are also a great way to keep little "eco geeks" healthy and hydrated. Klean Kanteens are made with durable stainless steel that is toxin free and dishwasher safe. The lip of the bottle mouth is efficient, large enough for ice cubes, and comfortable to drink from. The Kids Kanteen comes with two sippy lids, is easy to grip and seals tight to prevent leaks. Klean Kanteens are single walled and good for cold drinks but are not indended for use with hot liquids.