Your Cart is Empty

Add To Cart
Barfly Microshell Jacket

Barfly Microshell Jacket


The Barfly Microshell Jacket is our lightest waterproof layer at 340 grams (12oz). Streamlined for packability, we prioritize simplicity and weather protection to deliver a highly packable, high-performance 3-layer 30k / 30K waterproof / breathable shell that's easy to find room for.

Combine with the matching Barfly Overpant and insulated Jackaloft or Ectotherm Jacket to create a versatile multi-season layering system that packs down small.

[Don't see your size/color? We will re-stock the Barfly Jacket, but unfortunately, we don’t anticipate this until spring 2025. We apologize for any inconvenience. Please click the “notify me” button above to stay up to date.]


This lightweight 3-layer 30K / 30K waterproof / breathable shell features 20D Nylon stretch fabric that allows for unimpeded movement while riding and ease of layering over armor. Seal out the weather by tightening the adjustable elastic cuffs and drawcord hem. To combat the flap often associated with lightweight materials at higher speeds, cinch up the anti-flap adjustment hidden in the chest pocket. It also boasts a removable, single-adjust hood. Remove the hood when riding, or wear it under your helmet on nasty days for even more coverage. When not in use, the Barfly stuffs into its chest pocket to easily stash away until you need it. Even fair-weather trips have their moments; bring along some reassurance with the Barfly Microshell Jacket and matching Barfly Overpant.

  • 3 Layer Construction with Interior Knit Backer 30k/30K waterproof breathability with a soft knit backer to wick moisture and eliminate clamminess
  • Stretchy, Breathable Shell Fabric - breathable 20d nylon fabric with stretch allows unrestricted movement
  •  Zippered Chest Pocket with Internal Anti-flap Cinch System Single chest pocket to hold essentials or access the Anti-flap draw cord to reduce flap at high speeds
  •  Built-In Stowability - packs into the chest pocket for storage so you can never lose the stuff sack.
  •  Easy-Adjust, Removable Hood - hood adjusts with a single-pull drawcord and elasticized sides for optimal fit, removable for best performance on trail without sacrificing weather protection at camp
  •   Adjustable Elastic Cuffs and Drawcord Hem Seal Out Weather - low-profile cuffs use elastic in combination with a hook-and-loop closure for a tight wrist seal; dual-adjust drawcord hem seals out weather
  •   Full-Length Zipper with Storm Flap -Ykk Aquaguard Vislon water-resistant center-front zipper features a guttered internal storm flap for an added layer of weather protection
  • Over Armor Fit - designed to fit over separate body armor or armored mesh jacket
  • 100% 20D Nylon 2-Way Stretch 100gsm
  • 30K/30K Hydrophilic PU Membrane with 10D jersey backer
  • 87% Nylon, 13% Spandex 4-way stretch 312gsm
  • C6 DWR (Durable Water Repellency)
  • YKK Aquaguard Vislon zippers

Our apparel is designed to fit true to size over body armor - no need to size up; we've done the math for you.


Product Care

Visit our Help Center for Product Care info.


We never cut corners during development or manufacturing, so we stand behind our products. If one fails due to a problem with materials or workmanship, we’ll make it right. All Mosko Moto products include:

Limited Lifetime Warranty

'Limited' means it does not cover:

  • wear & tear
  • neglect/misuse/abuse
  • aesthetics
  • sun degradation
  • modification and/or use for a purpose other than what the item was designed for

Crash Care Program

Pair With

Complete this kit with the Barfly Pant.

The Barfly is the perfect way to add waterproof protection and extend the performance range of our Jerseys and Surveyor Jacket.

Customer Reviews

Based on 12 reviews
Bob Helgen

Got hit by a downpour…completely dry

Andrew Thompson
Fantastic Packable Shell

I've been looking for a shell to stuff into my Riding Vest. It needed to

- be a wind breaker on cool days,
- be a breathable rain jacket when I get stuck in an unexpected dump of rain,
- be able to put up with my lack of talent, and
- it needed to fit nicely over my armour.

The Barfly hit the mark!

It fits well over my gear. I'm 5'9", and a stalky 185lbs. The Large fits nicely over my Leatt AirFit body armour.

The zippers and closures are top-notch. The material has some nice stretch, it cuts the wind, and keeps me dry in the rain without slow-roasting me.

Nicely done, Mosko!

The perfect minimalist AND effective shell!

Hands down the lightest, most packable and most comfortable rainshell I ever had. It is even better than the Arcteryx Beta AR I've been using for years, and it is way better than the Deluge I had for a while. Tested under rain and hail in Morocco on my 500EXC and it performed very well (it blocks the wind too). The fabric is stretchy, soft and breathable, so you just forget you are wearing it (and you can wear it over an airbag thanks to the stretch). I didn't feel a single annoyance (and I am very picky when it comes to bulky cuffs or uncomfortable collars…). Only downside is that it is pretty fragile, but it is so thin and simple that you can perfectly wear it UNDER you jersey to protect it, so it becomes a non-issue. The detachable hood is a very good bonus at camp. IMHO, the elastic cord at the waist and in the hood are not really useful (so I will probably cut them), as the chest pocket (even if it doubles doubles as a stuffsack), and the jacket would be even lighter and more packable without those, but some might like those features. Appart from that (really minor and personal stuff),, honestly, I can't think of a better product for those who want to keep things light and compact, but still effective. Well done Mosko!

Andrea Fuso


Sandra Heidingsfelder
Beste Regenjacke

Super Regenjacke. Leicht und sehr bequem. Hält beim schlimmsten Dauerregen dicht. Werde nie wieder ohne Barfly unterwegs sein.