This Mubasel Gear Insulated Hydration Backpack Pack is perfect for outdoor activities like running, hiking, cycling, and camping. It features a 2L BPA free bladder that keeps liquids cool up to 4 hours. The sleek black design is lightweight and comfortable to wear, and the adjustable straps make it easy to customize the fit. The multiple pockets provide plenty of storage space for your essentials, and the reflective strips ensure visibility in low light. The insulated bladder keeps your liquids cool and fresh, and the wide opening makes it easy to fill and clean. Whether you're running, hiking, cycling, or camping, this hydration backpack is the perfect companion.