500ml double wall stainless steel sports water bottle
https://www.shdrinkware.com/product/insulated-stainless-steel-sports-water-bottle-for-outdoors/creative-500ml-double-wall-stainless-steel-cola-shaped-insulated-stainless-steel-sports-water-bottlewith-cork-bottom-base.html
The oak bottom is good for placing on the table to play a quiet effect, but also well protected the bottom of the bottle and the table contact friction for a long time.