The brewing carafe is constructed from 100% BPA-free non-breakable tritan with a reusable and easy to clean 18/8 rust-free superfine double wall stainless steel mesh to give the purest smoothest coffee brew. The portable 40oz mug is made with copper double walled vacuum insulation so your brew will keep cold or hot for hours. The resulting coffee is delicious and versatile and can be enjoyed anywhere cold or hot. FEATURES: Copper Insulated Steel Carafe, Clear TRITAN Brewing Carafe, 100% LEAK PROOF Lids. Keeps coffee concentrate fresh and cold for hours. Portable and lightweight. Great for on the go. Stays cold for 24 hours and hot for 12 hours. 40 oz capacity. Stainless steel. Hand wash. 5" x 5" x 13".