Material:This water bottle sling is crafted from soft and lightweight neoprene material. This flexible fabric provides insulation to keep your drinks at their desired temperature and protects your hands from hot or cold surfaces. It also helps prevent scratches, dents, and damage to your bottle.Relevant Usage:This carrier bag features an adjustable shoulder strap for a secure and comfortable fit on various body types. It includes a convenient zippered phone pocket to safely store your smartphone, keys, cards, or cash, keeping your essentials organized and your hands free, It's perfect for daily use like commuting and studying, or for activities like running, hiking, cycling, gym workouts, camping, travel, or sports events and beach days.Easy-to-Use:Using this water bottle bag is straightforward.