double wall insulated tumbler

Capacities range from about 16 ounces up to 40 ounces. Common sizes you’ll see include 16 oz, 18 oz, 30 oz and 40 oz.

Most are stainless steel constructions, commonly specified as 18/8 food-grade stainless steel; some options note recycled 18/8 stainless steel.

Many models advertise leakproof lids and include locking features such as push-button locks, dedicated lid locks, or carry loops that help secure the lid.

Common accessories include reusable straws and replacement lids; some listings also include a handle or offer the mug body together with the lid.

Many listings note BPA-free and lead-free construction; a few also call out being phthalate-free.