Most travel cups are made from stainless steel, commonly specified as food-grade or 18/8 stainless steel.
Common capacities include 11 oz, 16 oz, 20 fl oz, 30 oz, and 40 oz.
Common lid types include slider lids, flip-top lids, multi-function (3-in-1) lids, and straw-compatible lids that let you sip, drink directly, or use a straw.
Many tumblers include lids, and some also come with reusable straws; a few listings mention additional items such as handles or specialized multi-function lids as part of the set.
Several tumblers include ergonomic or comfort-grip handles and easy-carry grips to make larger capacities easier to hold and transport.
Warranty lengths shown range from a 6-month limited warranty up through 1 year, 5 years, and lifetime limited warranty options.