- Arete™ 18 Hydration Pack
With its lightweight materials and reversible, double-duty design, the Arête™ 18 is one of the most versatile packs we make. When you’re not wearing it, it reverses into an insulated reservoir sleeve—perfect for holding your water supply steady inside a larger pack. Ready for a quick hike? Just flip it right side out, and you’ve got room for snacks, layers, essentials, and 1.5 liters of water. Its lightweight materials and packable design also make it an excellent travel bag that won’t add bulk to your luggage. We updated this version of the Arête with additional pockets to keep your gear organized, along with a removable sternum strap.
- Features the brand new Crux which delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks
- Reversible design converts into an insulated reservoir sleeve
- Ultralight and compressible materials
- Removable sternum strap for a custom fit
- Secure zippered pocket for essentials
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: 16.5L/1000 cu in
Pack Weight: 300 g/0 lb 10 oz
Dimensions: 40.5 x 23 x 23 cm / 15.9 x 9.1 x 9.1 in
Fits torso: 38-53 cm/15-21 in
Back Panel: Padded Nylon
Waist Belt: N/A
Number of exterior pockets: 3
Includes a Crux reservoir, which delivers 20% more water per sip, with a self-sealing bite valve and ergonomic cap.
Crux On/Off Lever
Easy and intuitive, leak-proof On/Off lever. Water when you want it, none when you don't.