16.9 Oz [500ML] Stainless Steel Bottle, Matte White
Double Wall 18/8 stainless steel thermal bottle with copper vacuum insulation, threaded insulated lid, and powder coated finish.
The copper plating on the inner wall is an extra line of defense against temperature transfer. Heat escapes much slower so your hot coffee stays hot even in a snow storm, and heat enters much slower so your ice water doesn't melt even under a blistering summer sun. On average, copper vacuum insulatoin can make a difference of up to 9°F (5°C) over the course of 24 hours.