*** (Color Black Only)  Improved storage up front with a dedicated phone pocket, multiple bottle pockets, and extra gear stash pockets. The Fastpack 20 has a versatile opening with the roll-top and a full external zipper for easy access to everything inside. A new backpanel system combines the Infiknit™ technology with FastFlow to increase breathability and moisture wicking.

S/M: 25 – 40 in. / 64 – 102 cm
M/L: 30 – 48 in. / 76 – 122 cm
***Confirm your bottom ribs measurement before ordering. Measure wearing the clothes you intend to wear, a vest full of gear will fit smaller

SKU: 310-03-1000-UDMV-1-1-1-1-1-1-1 Categories: , , , , , , ,


The lightweight UD Fastpack 20 new for 2021 allows you to move fast in the backcountry with a durable design that checks all the feature boxes. True to our roots, it uniquely fits like a vest with water bottles up front, but distributes weight like a pack. We gave it an upgrade with Infiknit™ and FastFlow technology to increase the backpanel’s breathability and moisture wicking. This do-it-all pack also has plenty of dedicated external storage, a roll-top opening and a full-side external zipper for easy to anything inside. The higher capacity Fastpack 30 is also available at Trail Shed.

A favourite for moving fast and light in the backcountry or on the trail.

– Large front storage for water, phone, maps, glasses, or food.
– Unique zip-down main compartment for total access to gear.
– Roll-top closure expands or compresses to secure varying capacities.
– Large external stretch mesh pockets for quick access.
– Sliding rail sternum straps.
– Removable and height-adjustable T-hook waistbelt for heavier loads.
– Easy access pocket with keyfob.
– MonoRip Mesh is very strong, but extremely breathable.
– Daisy chains for securing extra gear.
– Two large side pockets for larger water vessels.

Volume Capacity: 21L / 1282 cubic inches
Weight: 500 grams / 17.5 oz

– MonoRip Mesh lightweight monofilament mesh is breathable, non-stretch, and hydrophobic – ideal for bounce-free load carrying.
– Reinforced Contrast Ripstop Nylon for strength and durability.
– 4-way Durable External Stretch Fabric with abrasion resistance.

Additional information

Pack Size

M/L, S/M