The Stanley Classic Half Quart Bottle is the ultimate in durability. Double wall stainless steel unbreakable vacuum insulation will keep coffee hot all day long, day after day. The Classic Half Quart Bottle has a double wall stainless steel cup, easy pour stopper, rust-proof finish and will fit easily into your bag or backpack. Every Stanley bottle is backed by a lifetime guarantee. Features: - Double Wall Stainless Steel Vacuum Insulation - Durable Rust Proof Finish - Easy-Pour Stopper