VACUUM INSULATED WATER BOTTLE - Double-wall insulation maintains indoor temperature regardless of outside temperature, keeps drinks cold for up to 24 hours and hot for up to 12 hours. FOOD SAFE STAINLESS STEEL CONSTRUCTION: Rust-resistant and food grade stainless steel water bottle; Metal construction inside and out for a long-lasting fresh taste. LEAK PROOF SCREW TOP LID: An airtight seal eliminates accidental spills and keeps the drinking bottle leak-proof; Being BPA free, phthalate and toxin-free, these reusable water bottles are a healthy choice. SPILL FREE & PERFECT FOR TRAVEL - Two-layer construction eliminates condensation and water buildup, so carrying these travel bottles is easy and mess-free with no water spots or slippery hands. LIGHTWEIGHT AND DURABLE: The revolutionary and lightweight design is sleek and easy to handle. It has a narrow mouth for spill-free drinking; fits most cup holders and makes a perfect travel companion.