Come and see our amazing products. Our water bottles are with double walled vacuum insulation technology, keeping your favorite beverages hot for 12 hours and cold for 36 hours.The insulated water bottle is with premium 304 food Grade stainless steel inside, never rust and without metallic taste.No harm to human health.Superior Powder Coated: Sweat proof, easy grip, the advanced technology prevents heat transfer to outer wall, condensation free and long lasting. Anti-slip layer ensures you hang on to your bottle during a work out, hike or yoga. Pls confirm with us about the packing info, stock color and exact production time before placing your order.