This bag is made of premium quality materials, including a waterproof TPU-coated Lycra nylon fabric and 210D polyester lining. It's lightweight, splash-resistant, and durable, making it the perfect choice for a day at the beach or pool. The bag measures 18.31x13.78 inches and can easily store your mobile phone, wallet, keys, clothes, magazines, and other items. The easy cinch drawstring closure makes it simple to open and close the bag, and the reflective logo adds an extra touch of safety. Whether you're headed to the gym or out for a day of adventure, the Olight Obag Sport is the perfect choice for carrying your essentials.