The cup uses GB4806 standard 304 stainless steel material, this stainless steel material is stable and gives good thermal insulation as well as stable practicality, guarding the health of drinking water, with a food contact liner for greater peace of mind in the mouth. The surface is smooth and easy to carry, unexpectedly easy. The vacuum technology locks in the temperature for a long time and the multi-layer insulation process locks in the temperature and keeps it cold throughout the seasons. Colorful colors to choose from. The inner test is made of food-grade pp material, and the inner thread with silicone sealing ring, use assured, not easy to leak water. Rounded and smooth mouth for a warm touch. The Convex bottom design reduces the contact area with the table and prevents scratches. Measuring 9.61*2.68 inches, this custom 16oz creative hexagonal diamond stainless steel insulated mug. 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.