Zak Designs offers top quality dinnerware and drinkware. All dinnerware is made of 100% melamine giving it the long-lasting, break-resistant and dishwasher safe finish that consumers expect. Fun, distinctive drinkware is a trademark of Zak"s product-line and are both practical and make mealtime fun! Boys ChillPak Sandwich featuring removable ChillPak with COLD HOLD Technology Lid that fits under lid to keep contents cool. Top and base are top rack dishwasher safe.