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Specialized Therminal Alpha Jacket

Specialized Therminal Alpha Jacket
  • Color: Black
  • Color: Kombu Green
Size: Select size
Please select options Unavailable


When you ride in frigid conditions, your options for lightweight insulation under your outerwear are limited. It's typically been a fleece jersey with rear pockets that only adds to bulk and weight. Insulation with a high warmth-to-weight ratio, like down feathers or polyester fiber-fill are ideal, but those materials need to be encapsulated with a coated fabric to contain them, cutting breathability down significantly. Our solution is Polartec Alpha insulation that provides insulation without the need to encapsulate, giving you unimpeded breathability for a warm, dry ride. The outer shell is lightweight and uncoated, furthering the flow of perspiration and allowing the piece to packable when you need to de-layer when things get too hot. The jacket is designed to be worn under an outer jacket, such as our Deflect H2O pieces, so the fit is close to the body to eliminate any bulk. An under-the-helmet hood provides an added wind layer and traps heat in where you lose it, at the top of your head, and we finish off the neck and wrists with reflective binding for visibility in case you're caught out after sundown.

- Woven outer shell with 90g Polartec Alpha breathable insulation combines to create a packable and warming insulation piece.
- A non-insulated hood is intended to be used under the helmet to keep the wind at bay and to trap heat on cold rides.
- Two front hand pockets keep your hands warm off the bike and provide room for your small essentials and electronics.
- Inside pockets are perfect to store a hat or gloves when things start to heat up.
- Edge binding at the wrists and collar seal in warmth and feature reflective tape woven-in for increased visibility to motorists in low-light conditions.
- Deflect UV 50+ protects against harmful UV rays.
- The fit is close to the body for layering under outerwear. For a looser, "street fit," we recommend one size up.
- Shell fabric weight: 48g

Part Numbers

Option UPC MPN Store SKU
Black / Small 888818398324 64419-7202 210000040731
Black / X-Small 888818523191 64419-7201
Black / Medium 888818398690 64419-7203 210000039378
Black / Large 888818399321 64419-7204 210000039377
Black / X-Large 888818398799 64419-7205 210000039376
Black / XX-Large 888818400102 64419-7206
Kombu Green / Small 888818397594 64419-7212
Kombu Green / Medium 888818399710 64419-7213
Kombu Green / Large 888818398874 64419-7214
Kombu Green / X-Large 888818399611 64419-7215
Kombu Green / XX-Large 888818397747 64419-7216