Breathable and Adjustable: This running backpack features soft, breathable mesh shoulder straps for ultimate comfort. It effectively absorbs sweat, promotes airflow, and prevents heat buildup, keeping your back cool. The adjustable shoulder straps ensure a perfect fit for most body types, both men and women. Lightweight and Reflective: This ultra-lightweight running backpack is designed with wide, breathable shoulder straps to distribute weight and reduce energy consumption. It's lighter than traditional backpacks and features reflective trim for enhanced safety during nighttime activities. Perfect for day hiking, cycling, running, or riding. Large Capacity: This running backpack offers ample space for your daily essentials, including laptops, tablets, wallets, books, mobile phones, water bottles, and umbrellas. Our hydration pack easily stores all your necessary gear, keeping everything within easy reach. Enjoy a more convenient and organized journey. Ideal for Sports: This waterproof and durable hydration pack is perfect for running, marathons, hiking, mountaineering, cycling, and other outdoor activities. It's an ideal choice for both men and women. It stays securely in place without bouncing (includes internal stickers to secure the water bladder). A great gift for friends and family who love outdoor sports.