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 inside 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 sternum strap and a lightweight back panel to give the bag a little more structure.
KEY PACK FEATURES: Converts to reservoir sleeve, secure stash pocket with key clip, removable sternum strap, ultra-light materials, highly compressible.
DESIGNED TO CARRY: Extra layers, food, headlamp, trail map.
ANTIDOTE RESERVOIR FEATURES: 1/4 turn - easy open/close cap, lightweight fillport, dryer arms, center baffling and low-profile design, patented Big Bite Valve, HydroGuard technology, PureFlow tube, easy-to-clean wide-mouth opening
CamelBak Got Your Bak Guarantee: If we built it, we'll Bak it with our lifetime guarantee.
- Hydration Capacity: 50 oz / 1.5L
- Total Capacity: 16.5L (1100 cu in) + 1.5L reservoir
- Total Weight: 11 oz / 0.32 kg (pack only)
- Dimensions: 16 x 9 x 8 in / 40 x 22 x 20 cm
- Torso Length: 16 in / 40 cm
- Back Panel: N/A
- Harness: Air mesh with removable sternum strap
- Belt: N/A
- Fabric: 240D box ripstop nylon