From the manufacturer

The CamelBak Crux™ replacement tube has larger diameter and offers more water per sip than previous tubes. Pair with the Crux™ reservoir on/off valve (sold separately) for 20% more water flow per sip. This replacement tube is NOT compatible with older style Antidote®or OMEGA®; reservoirs.

Features

20% more water per sip

Specifications

• 97.5 cm x 1.1 cm x 1.1 cm
• 40 g
• 100% PP Copolymers