Corkcicle. Stemless Copper 12 Ounce

[wootbot]

Corkcicle. Stemless Copper 12 Ounce

[Wooter115]

Is it Copper or is it Stainless Steel?..it makes both claims

[ThunderThighs]

Seems to be stainless steel

https://www.amazon.com/Corkcicle-Stemless-Copper-Unisex-12/dp/B074QXP5ZK