About this item 2 Sets of Lightweight Hydration Backpacks: you will receive 2 hydration backpacks and 2 pieces of 1.5L hydration bags; Each hydration pack for kids is equipped with a safety whistle and reflective strip design, and is equipped with 2 large storage compartments and 2 pockets, allowing children to store different supplies Size for Kids: this small kids cycling hydration backpack measures about 14.9 inches x 8.2 inches x 3.8 inches, small, cute and lightweight; And the water storage bladder bag is made of TPU material, quality and leakproof, is safe and odorless; The large opening design is easy to add water and clean, allowing children to replenish water in time during outdoor activities Waterproof and Sturdy: the kids hydration backpack is mainly made of nylon fabric, which is comfortable, waterproof, stainproof, wear resistant, and tear proof; The margins of the shoulder straps are also reinforced with stitched margins to ensure the long term use of the water rucksack Comfortable and Fit: the hydration backpack pack has adjustable chest straps and shoulder straps, which can be easily adjusted according to the child's body shape to better fit the child's shoulders, chest and waist; Moreover, the mesh shoulder straps and mesh back of the hydration backpack are padded, breathable and comfortable Wide Range of Applications: this compact children's hiking hydration backpack is lightweight and stable, making children feel relaxed and happy during outdoor activities, such as cycling, camping, running, jogging, climbing, walking and hiking › See more product details