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One reason that it’s more difficult to get out and ride during the winter months is that it’s more difficult for your body to maintain an ideal temperature. This increases fatigue and makes riding more strenuous. The Gore bike Wear Functional thermo Base Layer helps your body maintain that temperature more efficiently to make the miles slide by more easily.

The key performance function of the Thermo Base Layer is moisture management. Your body has a much more difficult time regulating its temperature when your skin is wet. The Thermo Base Layer fits like a second skin to increase moisture-management efficiency. The combination of an internal hydrophobic fabric (100% polyester)with an external hydrophilic fabric (100% polyester) pulls moisture away from your body to keep your skin dry and aid in temperature regulation.

Gore designed the Thermo Base Layer with as few seams as possible, since they cause irritation. Where seams were necessary it used flatlock seams, which cause less chafing than the traditional variety. Finally, Gore designed the WS Thermo with an extra long back to give you full coverage in the seated position.

The Gore Bike Wear Functional Thermo Base Layer comes in White or Black. It’s available in sizes Small to XX-Large.

  • Extra-long back won't expose your backside when you're hunched deep in the drops

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Gore Bike Wear Long Sleeve Base Layer

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4 5

Warm Base Layer

  • Familiarity: I've used it once or twice and have initial impressions
  • Height: 6' 0"
    Weight: 165 lbs
    Size Purchased: XL

Regarding size, I have a 41" chest, weigh 165 lbs., and am 6'0 tall. The XL is just right, very snug, without being tight. The length is generous, and the arms are generous, probably at least an inch and a half extra in the wrist.

Functionally, I only wore it once, on the lakefront in Chicago, as a base layer, temps around 38 and pretty chilly winds, under several other layers. Seemed to do the job. I had a Smartwool Micro Fleece over it, and the both of them seemed to be damper than I would have expected after riding. I think the Gore would perform better with another synthetic over it, then a Merino Wool over them both. After one ride, not able to really comment on its moisture-wicking properties. Very comfortable against the skin.

Fit is excellent, quality is excellent, typical to Gore products.