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Zero RH + Key-One Men's Jacket

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Item # ZRH0275

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Item # ZRH0275


Fortunately, we're long past the days of street wear winter jackets being passed off as winter cycling jackets. This is due in part to the truly fanatical innovators in cycling apparel, and not surprisingly, Italy plays host to the majority of them. And one of the leaders in bringing 21st century technology into apparel is the Paruzzaro-based Zero RH+. Just take one look at its new keystone jacket, the Key-One Jacket, and you'll experience the physical form of progressive ideology.

Starting at the front of the body, Zero RH+ used the ultralight Airdry Gold 250 fabric for its construction. As you might expect from its name, this material is completely windproof, and accordingly, it staves off the main source of winter chills -- headwind. As for the second principle of this fabric, the dry, Airdry Gold 250 uses a three-layer, open knit construction that maintains a high-level of breathability. Essentially, the fabric creates an internal micro climate that's unique to you. So, during intense aerobic exercise, the material allows excess heat to escape from the insulation layer. And not only does this keep your temperature well regulated, it also decreases moisture accumulation as well. For breathability, the front of the jacket also utilizes Zero RH+'s Air Through technology. This system selectively allows passage of air through the jacket for a refreshing sensation that also accelerates vapor evaporation.

For added breathability, the rear and side panels of the jacket have been constructed from the Airdry Gold 200 fabric. This material is highly insulating, stretchable, and soft -- all qualities that enhance the jacket's impeccable fit. And on this note, this is where Zero RH+ really shines. The body and sleeves of the jacket have been pre-shaped and stitched on a contour of an anatomic form. This means that the cut has been coordinated to the predictability of your body's movements. So, when you move, the jacket moves with you, not against your skin. And to further ensure this, the Key-One jacket features stretch panels at heavy points of articulation. Additionally, the jacket features Kinesio applications on the chest, sleeves, and back to add a slight proprioceptive compression. However, while the compressive gains are minimal, the applications' contribution to fit is drastic. And to secure the fit are Zero RH+'s proprietary grippers at the front and rear hem. These provide a delicate, yet effective hold that ensure the jacket's stability while you're moving in and out of the saddle.

To provide extra visibility to motorists in low-light conditions, the jacket features reflective accents throughout. And to store your ride essentials, Zero RH+ included three ample-sized rear pockets and one rear zippered security pocket. Additionally, the jacket's zipper utilizes a self-locking slider and is protected from drafts by a zipper garage a the neck.

The Zero RH+ Key-One Jacket is available in six sizes from Small to XXX-Large and in the colors Black/white and White/black/red.

Tech Specs

[front] Airdry Gold 250, [back] Airdry Gold 200
Fabric Waterproof Rating:
Fabric Breathability Rating:
highly breathable
Windproof Rating:
full-length front zipper
3 rear, 1 rear zip
Recommended Use:
winter road cycling
Manufacturer Warranty:

Size chart

Fuji Bicycles


Geometry Chart


Altamira LTD

Seat Tube


Effective Top Tube








Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length



44 44.0cm 51.5cm


36.3cm 72.1cm


72.0 deg 75.0 deg 6.9cm 40.5cm 97.1cm
47 47.0cm 53.0cm


37.0cm 74.1cm 13.0cm 72.5 deg 74.5 deg 6.9cm 40.5cm 97.7cm
50 50.0cm 54.5cm 54.0cm 37.0cm 76.0cm 14.0cm 73.0 deg 73.5 deg 6.9cm 40.5cm 97.6cm
53 53.0cm 56.0cm 56.0cm 37.9cm 78.3cm 16.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 98.6cm
55 55.0cm 57.5cm 58.0cm 38.9cm 80.1cm 18.0cm 73.5 deg 73.5 deg 6.9cm 40.5cm 100.1cm
58 58.0cm 59.0cm 60.1cm 39.7cm 82.1cm 20.0cm 74.0 deg 73.5 deg 6.9cm 40.5cm


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Unanswered Question

The description says race fit, but the...

The description says race fit, but the picture looks like a looser style. I'm looking for something not too tight (not slim/contour fit). Can you explain a little more about the fit?