AVOIN colorlife 25oz. Double Walled Vacuum Insulated Stainless Steel Sport Water Bottle(Many Color Option) - BPA Free 100% pure High-quality food grade 18/304 stainless steel on both inside AND outside walls - Non-leaching & toxin-free Unique double-walled vacuum insulation technology with vacuum-seal cap keeps your drinks cold for 18 hours hot for up to 12 hours Wide drip-free mouth opening for ice cube insertion(mouth:2 inches) and easy drinking - Perfect for hiking camping sports and everyday use Fashion design looks cool - you will love it yourself and want to gift it to family/friends Durable & Dependable - Rust-proof and leak-proof