Safe and durable materials: These beer coolers are made of high-quality stainless steel and adopt advanced cooling technology, which will not make the beer tasteless, durable, environmentally friendly and safe. Sealing and safety: unique design, super tightness will not leak. The sophisticated design ensures the safe and efficient cooling of beer. The cooling rod has two openings to ensure that the beer can easily flow through the openings when you drink beer. Comfort for daily use: first clean the beer cooler with running water, then put it in the refrigerator for 45 minutes, and then put it in a beer bottle to keep the drink cool to the end. The beer cooler is 21.4 cm (8.4 inches) long and suitable for the most common Long neck beer and soft drink bottles. Easy to clean after use: After use, just hand wash and dry the beer cooler, then put it back into the small refrigerator space to spend a good time with your friends, relatives and family. How to use: Step 1: Freeze the cooler for 3-4 hours, then drink a glass of beer to make room for the beer cooler.STEP 2: Insert the cooler into the bottle, taking care not to go too fast to avoid overflowing the beer. STEP 3: Remove it from the bottle cap, stick it in the beer and press firmly to form a tight seal, and then wait for 2-3 minutes.STEP 4: Enjoy the direct drinking function and the coolness of the beer cooler with friends. "