The CamelBak Velocity 2.5L 85 oz. Hydration Backpack in blue is designed for backpacking and outdoor activities. This unisex hydration pack has a capacity of 2.5 liters (85 ounces) and comes in one size. It features a comfortable design for long-lasting wear and ease of use on the trail. The brand CamelBak is known for high-quality hydration packs, making this backpack a reliable choice for staying hydrated during outdoor adventures.