Enjoy your favorite beverages from modern, insulated tumblers that effortlessly mix style and practical functionality. Thirstystone by Cambridge stainless steel tumblers feature sweat-proof double walls and vacuum insulation that keeps hot drinks hot and cold drinks cold for hours. They are perfect for indoor or outdoor use, shatter-proof, BPA Free, and dishwasher safe are just some of the reasons mixologists around the world are shifting to metal drinkware for everyday or entertaining.