From the manufacturer

The CamelBak Crux™ insulated tube offers 20% more water per sip than previous tubes. Its insulated thermal sleeve helps prevent freezing in cold weather and helps keep your water cool in warm weather.

Features

• Designed for reservoirs featuring the Quick Link system for easy click on and off (sold separately)
• The patented Big Bite Valve mouthpiece offers Hands‐Free Hydration and is ideal for any high‐performance situations
• Includes Crux reservoir delivery tube, insulated cover, Big Bite valve, Crux on/off valve and Quick Link connector

Specifications

• 107 cm x 1.8 cm x 1.8 cm
• 80 g