Mountain Hardwear Fluid 18

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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 Plasmic Jacket uses top-tier technologyAquaguard front zip and Dry.Q EVAP for unbeatable wicking.The Plasmic keeps you comfortable no matter how active you are. Dry.Q EVAPs innovative system of channels disperses sweat quickly for faster evaporation, improved breathability and a drier interior feel without pit zips.


Mountain Hardwear Fluid 18 BackpackThe Mountain Hardwear Fluid 18 Backpack is a multi-use pack that is preferred by day hikers or fast-moving endurance athletes. This pack has a low profile design which provides a maximum range of motion, while keeping the essentials within reach. The pack has an easy access hydration sleeve with a convenient tube. It has a close fitting suspension with on-the-fly compression, and venting channels to prevent overheating. The Mountain Hardwear Fluid 18 Backpack has ventilation shoulder straps with integrated pockets for easy-access storage.

- SunnySports

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 18L Pack FEATURES of the Mountain Hardwear Fluid 18L Pack CoolWave Suspension with air channels and breathable spacer mesh backpanel and lumbar provides excellent load support and great ventilation OTF (On-The-Fly) Compression lets user adjust load stability while wearing the pack without restricting motion Large main compartment with internal security pocket Front compression pocket with stretch mesh panels for overloads, helmet, etc Large zippered mesh pockets on ventilated hip belt keeps essentials handy Dedicated zip access hydration sleeve with dual ports SPECIFICATIONS of the Mountain Hardwear Fluid 18L Pack Body: 100D HT Ripstop Dobby Nylon Accent: 210D HexNut Ripstop Nylon Bottom: 210D HexNut Ripstop Nylon The SPECS for Small/Medium Weight: 1 lb 8 oz / 680 g Capacity: 1100 cubic inches / 18 liter Torso Range: 16in.- 19in. / 41 - 48 cm Waist Belt Size: 28in. - 34in. / 71 - 86 cm The SPECS for Medium/Large Weight: 1 lb 10 oz / 740 g Capacity: 1220 cubic inches / 20 liter Torso Range: 18.5in. - 22in. / 47 - 56 cm Waistbelt Size: 33in. - 39in. / 84 - 99 cm

- Moosejaw