Premium 32oz/40oz/64oz wide-mouth stainless steel vacuum flask with double-wall insulation technology. Commercial-grade 18/8 stainless steel construction ensures durability and rust resistance. Advanced vacuum sealing maintains temperature for 24 hours (hot) or 48 hours (cold). Ergonomic sweat-proof design features a precision-machined threaded mouth and leakproof silicone gasket. Custom logo printing available for bulk orders (minimum 500 units). Ideal for gym hydration, outdoor adventures, office use, and promotional corporate gifts. FDA-approved food-safe materials with BPA-free composition. Includes durable carry loop and anti-slip powder-coated base. Wholesale pricing available for orders above 1,000 units with volume discounts.