Flip Top Lid: 304 Stainless Steel, Bottom Sticker: Resin, Leak-proof Seal: Silicone, Lid: PP, Mouth: PP, Button: ABS, Switch Spring: 304 Stainless Steel.
1. Please clean the product with warm water and neutral detergent before use. 2. After pouring into water, you need to screw it clockwise tightly to avoid leaking.