ICEMULE sling coolers keep your hands free and your drinks cold for up to 24 hours. They range in size from 9L to 20L, so you can choose the right one for your needs. ICEMULE coolers are also waterproof and perfect for any adventure, whether you're hiking, biking, or kayaking. They're also great for picnics, concerts, BBQs, and beach days. ICEMULE coolers have a unique leak safe lining that keeps the coldness in. The lining is also easy to clean. ICEMULE coolers come in a variety of colors and styles, so you can find the perfect one for you.