Safe: made of high-quality stainless steel and silicone, safe to use and use. Wide range of uses: can be used for beer, wine, pre-mixed spirits, casual soft drinks, etc. Easy to use: just insert the stainless steel rod into the bottle, place the mouth on the silicone, and turn it over to drink Working principle: The vent tube decompresses the beverage and acts as an outlet hole, so the liquid can flow faster. Compared with other products, our products have a timer, so you can compete with your friends for a drinking time competition. type: curved colour: green Material: stainless steel + silicone Package Contents: 1 x Beer straws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.