The ThermoFlask 40oz Insulated Stainless Steel Tumbler 2-Pack includes two double-wall vacuum insulated tumblers with ergonomic handles and straw lids. Each tumbler holds 40 oz (1183 ml) and is constructed from 18/8 food grade stainless steel with a BPA-free plastic lid.

Featuring Temp-Lock technology, these tumblers keep drinks cold for up to 24 hours. Each tumbler comes with two Tritan straws — a standard size and a jumbo size for smoothies. The splash-proof silicone gasket minimizes spillage around the straw opening, while the integrated silicone bumper protects surfaces and helps the tumbler stay put. The tapered base is designed to fit standard cup holders, measuring 5.7" W x 3.9" D at the top and 2.8" D at the bottom, with a height of 10" (12.4" with straw inserted).

Both tumblers are dishwasher safe and backed by a limited lifetime warranty from Takeya USA. ThermoFlask is a brand of Takeya USA, known for durable, reusable drinkware designed to reduce single-use plastic waste.