What Our Gearhead(R) Experts Are Saying:"The Moki Bike Pack is lightweight and keeps hydration easy with its included reservoir. Its expanded compartment offers just enough room for snacks or a layer, and the ventilated back panel keeps it comfy during rides."When the trail calls, the Moki Bike Pack ensures junior riders are ready to answer. With Osprey's durable construction and thoughtful design, this pack keeps hydration simple and effective, thanks to its included 1. 5L Hydraulics reservoir. Expanded storage and mesh-covered EVA foam back panel make this pack versatile and comfortable for long rides or adventurous outings.