With its lightweight materials and reversible, double-duty design, the Arete 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.

• The brand new Crux 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