Listed capacities vary across products: 40 oz, 28 oz, 27 oz, about 20 oz, 19 oz, and 16 oz.
Listings show two primary materials: stainless steel or plastic. Some products explicitly state stainless-steel construction while others list plastic.
Reported overall heights range from about 7.5 to 11 inches, and widths range from roughly 3.14 to 4.5 inches across the available listings.
Accessories shown in listings include handles, matching lids (screw-top or slide-close), and plastic straws. Several product descriptions note that lids and/or straws are included.
Common notes include BPA-free labeling (including mentions of BPA & BPS free), guidance that products are not for microwave or freezer use, and care recommendations such as hand-washing or top-rack dishwasher use.