copper water bottle

Inner copper plating is part of the bottle's vacuum-insulated construction and is used to help maximize temperature retention, so drinks stay hot or cold longer.

Available capacities cover a wide range, including 14, 16, 18, 20, 24, 32, 40 and up to 64 ounces.

Listings state the bottles keep drinks cold for up to 24 hours and hot for up to 12 hours.

Most listings include an airtight screw cap and a bonus sports cap with a straw; some listings note the bottle ships with two caps. Exact cap types and quantities can vary by product listing.

They use vacuum-insulated construction with double-wall or triple-wall designs, combined with inner copper plating to improve temperature retention.

Clean with water and a mild detergent and rinse thoroughly. Product descriptions indicate these bottles should be hand washed only.