- Our hydration backpack features a sleek and minimalist design, suitable for both men and women. The adjustable bungee cord closure ensures a secure fit, keeping the vest in place while conforming to your body for maximum comfort. - Versatile for various sports: This hydration vest is designed to accommodate a wide range of activities, including cycling, running, fishing, hiking, camping, and rock climbing. It is the perfect choice for outdoor enthusiasts who need a reliable and functional vest to carry essentials during their adventures. - XL Size: The XL hydration vest has a length of approximately 49 cm (19.29 inches) and a chest circumference of about 93.5 cm (36.81 inches), fitting a body size of 100-107 cm (39.37-42.13 inches). Please refer to the size chart to select the appropriate size for an optimal fit that allows freedom of movement during activities. - Material: Made from high-quality polyester, our hydration pack is soft, comfortable, and durable. It is resistant to wear and tear, ensuring longevity even with regular use. The material is easy to clean, guaranteeing sustained performance. - Practical use scenarios: Ideal for a day of hiking where hydration is key, or as a companion for a long bike ride, our vest allows easy access to water and supplies without compromising mobility. Designed for active lifestyles, it's perfect for any outdoor adventure.