CamelBak Classic Bike Hydration Pack 85oz, Lapis Blue/Atomic Blue - Crux delivers 20% more water per sip, with an ergonomic handle for easy refilling and an on/off lever to prevent leaks. - Breathable air mesh back panel for a lightweight, comfortable fit - Reflective accents for visibility in low-light environments - Secure zippered pocket for essentials - Lightweight, ventilated mesh harness