What Our Gearhead(R) Experts Are Saying:"My kid never wants to take this pack off. It fits perfectly, carries snacks, layers, and the included hydration bladder makes it super easy for them to stay fueled without stopping every ten minutes. It's become essential for our family hikes and bike rides."Curiosity doesn't wait for perfect weather-or perfect gear. That's why we trust the Osprey HydraJet 12L Hydration Pack to keep our young explorers equipped, hydrated, and stoked from trailhead to tree fort. Sized specifically for kids, this 12-liter daypack features an included Osprey Hydraulics(TM) 1. 5L reservoir and external sleeve that makes refilling and routing easy. Whether they're chasing butterflies or leading the family on a bike ride, the AirScape(TM) backpanel offers breathable comfort and a stay-put fit. Thoughtfully placed stash pockets secure snacks, treasures, or extra layers, while the bluesign(R) APPROVED recycled fabrics offer durability and sustainability in equal measure. It's a real pack, made for real adventures-just their size.