Food grade 304 stainless steel material, temperature control and keep cold, corrosion resistance, not easy to rust, healthy drinking water is guaranteed. Enhanced thermal insulation performance, and long-lasting heat preservation. The lid and body of the cup are tightly sewn together, for safe sealing and water leakage prevention. Large capacity design, to meet the needs of drinking water outside. Rounded mouth, smooth and comfortable, with a straw, drinking water does not scratch the mouth. Non-slip cup bottom, placed without sound, durable. Handle design, heat insulation, and anti-scald, comfortable to hold. Anti-scald straw, removable design, durable. Extra large capacity, hydrate anytime, anywhere. Can be customized with an exclusive logo. Measuring 40oz, this custom big mac insulated bottle 40oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: BPA-free, leak-proof, travel-friendly.