This pack has grownup features that fits younger explorers: room for 1.5 liters of water, a bike tool organizer pocket, and zippered essentials pockets. We've also added reflective strips and a safety whistle to make kids easy to spot on the trail. Features. • Reflective accents for visibility in low-light environments. • Breathable air mesh back panel for a lightweight, comfortable fit. • Safety whistle included on sternum strap. • Secure zippered pocket for essentials. • Lightweight, ventilated mesh harness. • Bike tool organizer pocket keeps supplies safely stored and easily accessible. Specifications. • COLLECTION: Bike. • ACTIVITY: Cycling. • USER: Youth. • HYDRATION CAPACITY: 1.5L/50 fl oz. • HYDRATION TYPE: CRUX™ Reservoir with Standard Exit Port. • BPA/BPS/BPF FREE: Yes. • QUICK LINK DISCONNECT: No. • GEAR CAPACITY: 1.5L/90 cu in. • PACK WEIGHT: 210g/7 oz. • DIMENSIONS: 35.5 x 19 x 19.5 cm / 14 x 7.5 x 7.7 in.