Premium 40oz (1.2L) vacuum-insulated stainless steel water bottle featuring double-wall construction for 24-hour temperature retention. Commercial-grade 18/8 stainless steel interior resists rust and odors while maintaining liquid purity. Advanced copper-plated vacuum seal enhances thermal efficiency for both hot (12h) and cold (24h) beverages. Ergonomic handle design enables secure one-handed grip during outdoor activities. Leak-proof screw lid with silicone gasket ensures spill-free transport in backpacks or car cup holders. Mirror-polished exterior with scratch-resistant finish maintains professional appearance. Ideal for construction sites, gym workouts, road trips, and office use. BPA-free materials meet FDA food safety standards. Bulk purchase available for corporate gifts or retail resale.