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iJ.haBu.5 Jacket - Men's

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iJ.haBu.5 Jacket

There's a breaking point when the weather gets cold enough that thermal jerseys alone don't provide enough warmth. The Assos iJ.Habu.5 Men's Jacket is designed to take you beyond that barrier. It wears with the weight and feel of a jersey and is ideally used over one of Assos' three different Interactive Base Layers to vary the total effect of its warmth. The critical design detail that gives the iJ.Habu.5 Jacket the potential to keep you warm into seriously chilly weather is the Stratagon windproof material that Assos places across the front, down the arms, and over the shoulders.

The rest of the jacket is made with Roubaix Q fabric. It's a lighter weight version of their typical Roubaix material, so it provides insulating warmth without causing you to overheat in temperatures in the '40s. Assos is known for its tendency to engineer everything, and the Assos difference manifests in Roubaix Q as a waffle pattern crisscrossing its inner face. This reduces the weight of the fabric and increases its compressibility without affecting the insulating qualities. As a result, the iJ.Habu.5 can still be crammed into a jersey pocket should the frigid morning develop into a bright winter afternoon.

Though the jacket is cut with a more form-fitting silhouette than most cold-weather kit, Assos' impeccable tailoring and the stretch of the materials means it won't hamper bar reach or layering. And while we appreciate not having to fight the jacket in order to reach for a bottle, the ability to add a light, medium, or even heavy wool base layer beneath the jacket is even more valuable. This layerability lets you convert the jacket into a full-on winter-weight item when conditions require by adding additional warmth beneath its protective shell. Whatever your layering choices, the iJ.haBu.5's mesh lining facilitates moisture movement away from your microclimate so you stay as dry as possible. In high-wear areas—like over the spine and inside the windproof collar—Assos laminates aditional lightweight mesh to protect the base materials and your skin from abrasion.

On the back, you'll find three standard pockets and two zippered pockets for secure storage, a feature you'll appreciate if you've ever stashed your phone in a jacket pocket only to take it off when you got too warm and been unlucky enough to hear your phone slide out of its berth as you pulled your arms free. It also has reflective elements along each zipper on the back and up the front of the jacket, and the front zipper itself terminates at the top and bottom in contrast-color zipper garages to prevent fabric snags and throat irritation.


  • A winter cycling jacket for temperatures into the low-40s
  • Windproof paneling throughout provides moderate protection
  • Lightweight thermal insulation maintains comfort in cold weather
  • Expansive storage includes zippered security pockets
  • Reflective details help maintain visibility on dreary winter days
  • Assos' obsessive attention to details surfaces here in cold-weather style
  • Item #AAS001T
41% nylon, 21% polyester, 16% polypropylene, 14% elastane, 8% polyurethane
3 rear, 2 rear zip
Recommended Use
Manufacturer Warranty