If your youngsters are old enough to ride trails, then they'll need their own hydration. And because many kids' bikes are too small to affix a water bottle mount, the Evoc Joyride Hydration pack is the perfect solution. Like its older and bigger siblings, the Joyride was constructed from 210 denier ripstop nylon that was polyurethane coated for water resistance and durability. The pack holds just over 224 cubic inches and features a main compartment as well as a smaller, fleece lined pocket. Adjustable Air Mesh shoulder straps and waistband keep the pack securely fastened. It holds a two liter hydration bladder. The Evoc Joyride Hydration Kid's is available in two colors: Redpink and Skypetrol. It comes in one size and is suitable for most children from ages 7 to 12.