Dust and Dirt Shield: Not only for opening cans, it also effectively blocks dust, dirt and bugs from entering the can, allowing you to take a sip or leave the can while doing other things. Nail Protection: No more sore fingers or broken nails. Save your nails with a can opener to cap your drinks quickly and easily. FITS MULTIPLE CANS OF VARIOUS SIZES: The Beverage Barrier fits any 6 oz, 8 oz, 12 oz or 16 oz standard aluminum can. Perfect for picnics, backyard barbecues, camping, picnics or gatherings of family and friends. Small and portable, easy to carry. DURABLE MATERIAL: These can openers are made of high quality plastic material and can last a long time. It can also be used as a drink barricade to cover and protect your drink from insects and dirt. EASY TO USE: Just slide it onto the tab until it locks, lift to open the can, and rotate it to cover the mouth opening. The whole process takes less than 2 seconds It's so intuitive to use that even kids can pick it up quickly.