Mountain Hardwear Fluid 18


Weight 1 lb 12 oz / 780 g
Capacity 1100 cu in / 18 L
Dimensions 21 in X 10 in X 9 in / 53 cm X 27 cm X 24 cm
Materials 100D Ripstop Cordura® Nylon, 210D HexNut™ Ripstop Nylon, 315D Cordura® Nylon

Manufacturer's Description

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Retailers' Descriptions

Here's what other sites are saying:

The Mountain Hardwear Fluid 18 Backpack was built for speed and stability in demanding environments. Its mix of lightweight, breathable comfort and locked-down stability is perfect for applications like super-tech terrain or distance trail runs. Tough, yet lightweight ripstop nylon fabric resists tears from snagged branches and jagged rocks. The hydration sleeve allows you to route the tube from over either shoulder or from the bottom of the pack depending on your preference. Close-fitting suspension allows you to move without feeling your pack swinging around, and a stowable waist belt allows for additional support and security. Venting channels promote airflow to keep your back cool and dry. Finally, the Fluid 18 also has ample pockets to keep your smaller necessities organized, including integrated pockets on the shoulder straps, a stash pocket for easy access to snacks, and a fleece-lined sunglasses pocket to prevent your shades from getting scratched.


On Sale. Free Shipping. Mountain Hardwear Fluid 18 Pack FEATURES of the Mountain Hardwear Fluid 18 Pack Stash pocket on front of pack keeps jacket or other items close at hand Soft, ventilated shoulder straps with integrated pockets for easy-access storage Close fitting suspension with on-the-fly compression and venting channels to prevent overheating Easy access hydration sleeve offers choice of routing tube over the shoulder or from lower pack, left or right Zippered security pocket and key clip in protected area above shoulder straps Top fleece-lined zippered pocket for safe storage of sunglasses, smart phone or other valuables Stowable webbing belt adds stability when needed SPECIFICATIONS of the Mountain Hardwear Fluid 18 Pack Regular Fit Capacity: 1110 cubic inches / 18 liter Weight: 1 lb 2 oz / 500 g Torso Length: 16.0 - 22.0in. / 41 - 56 cm Load Range: 10 - 25 lbs / 4 - 11 kg Body: 100D HT Ripstop Dobby Nylon Accent: Power Mesh

- Moosejaw

Multi-use pack that's ideal for day hikers or fast-moving endurance athletes. The low-profile design offers maximum range of motion while keeping essentials within reach. Includes an easy access hydration sleeve with convenient tube exits that you can route high or low, left or right.


When the route is technical and you're moving fast, the last thing you want is to overheat or get weighed down. Be light and nimble with the Mountain Hardwear Fluid 18 Daypack it's small and simple with enough room for your day trip essentials. The large main compartment offers a dedicated hydration sleeve and holds an essential rain or warm layer, while a security pocket and secondary compartment offer space for snacks, maps and other must-have items. You'll also find the large hipbelt pockets, stretchy side pockets and front compression pocket with stretch-mesh panels useful for storing everything from your sunscreen to your bike helmet. CoolWave suspension with air channels and breathable mesh back panels offer superb support and great ventilation when you're working up a sweat. The On-The-Fly compression allows you to adjust load stability while wearing the pack, without restricting motion.There are even loops to accommodate an ice axe or trekking poles and reflective tabs for added low-light visibility. Auxiliary storage options and a dedicated hydration system give the Mountain Hardwear Fluid 18 Daypack a versatile, multi-sport personality.

- Altrec Outdoors