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Assos sV.blitzFeder Vest - Men's

Sale $101.37 - $169.00

Item # AAS004R Past Season Colors

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  • White Panther, XS ($101.37)
  • White Panther, S ($101.37)
  • Black Series, M ($169.00)
  • Safety Yellow, XLG ($169.00)
  • White Panther, M ($101.37)
  • Black Series, L ($169.00)
  • Safety Yellow, TIR ($169.00)
  • White Panther, L ($101.37)
  • White Panther, XL ($101.37)
  • White Panther, XLG ($101.37)
  • White Panther, TIR ($101.37)
  • Safety Yellow, M ($169.00)
  • Safety Yellow, L ($169.00)
  • Safety Yellow, XL ($169.00)
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Item # AAS004R

The utmost in practicality.

For riding in cool or cold conditions, it's extremely difficult to beat the practicality of a great vest. Element-proof materials that keep the wind and rain off of you go a very long way in preserving your overall comfort when the temperature drops. Their packability means convenience, too. All told, if you're sold, allow us to introduce the Assos sV.blitzFeder Men's Vest as an ultimate option for going sleeveless.

In their forest of technical terms as the fabric wizards that they are, Assos refers to its vest formally as a "sleeveless shell." A vest in other words, but Assos is calling it the former to demonstrate how protective it is. Having a windproof barrier between your jersey and the outside gives more protection than a simple vest with a mesh back. The blitzFeder is better at releasing sweat vapor than most pieces, thanks to the new Foil043 fabric. It's feathery light and ultra-thin; ball it up and it easily fits in a jersey pocket. There's even a stuff sack sewn into the vest to make this especially possible.

Assos calls the material a "natural windbreaker," which is its way of saying that there is no membrane applied in creating the windproof qualities of the material; the structure of the threads and the density of the weave make it so. A treatment is added to give the fabric water repellency, however. The fabric was also engineered not to rustle in the wind — wizards, indeed.

As with all Assos garments, the vest is designed for a snug fit, and it fits best when in the riding position. There is elastic at the shoulders and waist to minimize unwanted shifting, and it has elastic mesh inserts on the sides of the back and under the arms to allow some stretch. There are also reflective tabs on the shoulders and on either side of the waist for added visibility.

The Assos sV.blitzFeder Vest comes in a translucent color scheme called White Panther, and it's available in seven sizes, from Small to the largest called TIR.

Tech Specs

95% nylon, 5% elastane
spring, summer, fall
Recommended Use:
road cycling
Manufacturer Warranty:

Size chart


Men's Apparel
Leg & Knee Warmers 0 I II
Height 4ft 11in - 5ft 2in
(150 - 159cm)
5ft 3in - 5ft 6in
(160 - 169cm)
5ft 7in - 5ft 10in
(170 - 179cm)
5ft 11in - 6ft 1in
(180 - 185cm)
6ft 1in - 6ft 3in
(186 - 190cm)
6ft 3in - 6ft 5in+
(191 - 195cm+)
XLG but wider
Arm Warmers 0 I II
Chest 35.4in
46.5+ in
How to Measure:
For best results, take measurements over your underwear.
Measure around the widest part of your chest.

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Runs small, flaps in the wind

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: Medium

I originally order a small based on the size chart. I am pretty skinny but I could not even come close to getting it zipped. So I returned it for a medium which fits ok but is tight around the neck and loose in the shoulders.


Its Assos
It blocks the wind
It breathes ok but I feel it holds in sweat a little bit.
The zipper is easy to adjust while riding
The slits in back make it possible to access my jersey pockets
It packs down very small


Strange fit, size chart is way way off.
Neck is tight, shoulders are loose
It flaps a lot when I am in a lower position going downhill, very annoying. For the high price I am disappointed.
I would have returned it but I have it longer than 30 days which is long it took me to realize the problems

Minimalist vest but do you need sleeves?

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small

For a wind-breaking vest you can't beat it. As advertised, it is extremely lightweight and compact, and appears well-made. I did not see this mentioned but it has 2 cutaways on back that roughly align with the typical left/right pockets on a jersey; but, don't count on quick and easy access under intense conditions (e.g. a race) where you don't have the luxury of stopping and pulling over. I went back and forth on whether to order this Blitzfeder vest or the long-sleeve Blitzfeder jacket. To experiment, on a cold 40F ride I intentionally dressed a little on the cool side with just a long-sleeve base layer, a short-sleeve jersey, and this vest. The vest kept my core nice and warm while my arms stayed cold, which tells me the material of the vest works, but that the long-sleeve version paired with a simple base layer would provide the equivalent of a decently warm cycling jacket with a removable outer layer. Ideally I would have both in my wardrobe. I am 5'11, 175 pounds, 99% body fat, and the XL is just big enough, with a tiny amount of room left over to accommodate variable winter layers.

compact and effective. Runs small.

  • Familiarity: I've put it through the wringer
  • Fit: Runs small
  • Size Bought: Large

This vest fints in it's own opocket about the size of a small flat apple so it is always easy to take alomg. It blocks the wind well and resists small amounts of rain. It fits super well so no very little ttle if any flapping unlike many vests. I found it just the thing to block the wind on chilly mornings and then stuff in a rear pocket as the day warms up. Note that i usually wear a medium, i'm 5'10", 168 lbs, 9% body fat, and in this piece a large just fits.