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Castelli Thermoflex 2 Legwarmers Castelli Thermoflex 2 Legwarmer
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Castelli Thermoflex 2 Legwarmers

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Castelli's Thermoflex 2 Legwarmers provide luxurious fleecy warmth on dry and chilly bike rides in spring, fall and winter.

If you don't need the extra wet weather protection of Castelli's Nano Flex fabric, you'll find that the Thermoflex warmers outpace traditional warmers with a combination of the softest, most comfortable fabrics and the brand's careful attention to construction details.

The single-piece design means the Thermoflex 2 Legwarmers won't rub or scratch while the dual-sided silicone grippers prevent slippage and keep them locked in place.

Features & Specs:

  • Thermoflex fleece fabric is warm, stretchy and soft
  • Single-piece construction with flat-lock seams
  • Embossed Castelli wordmark logos
  • Dual-sided silicone gripper elastic at top prevents sliding down
  • 8-18 Celsius / 46-64 Fahrenheit
  • Weight: 114 g

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Black - Small

Mfg PartNum: O19531010-2 

Black - Medium

Mfg PartNum: O19531010-3 

Black - Large

Mfg PartNum: O19531010-4 

Black - X-Large

Mfg PartNum: O19531010-5 

Ordered by Most Relevant First
5 stars
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3 stars
2 stars
1 stars
Reviewed 11/24/2022
by Anonymous
Cycling Enthusiast
Upstate NY
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Good but missing a key feature

These leg warmers do the job at keeping your legs warm. I've worn them in the high 30's. They are very stretchy and snug. Because of this, you have to make sure you aren't stretching them upwards when you put them on. Otherwise they slip down when you ride. The best thing to do is to pull them all they way on and pull up the fabric so they are loose at the top. Then pull down and adjust the fabric. Once you have them set right, they are fine.

The one feature missing is that they are not reflective. They don't claim to be so it's not a product defect. But keep that in mind when you make your product selection.

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Reviewed 1/13/2022
by Society is to blame
Cycling Enthusiast
Value Rating
Overall Rating
They tore already at the gripper

They tore at the top near where the grip strip meets the rest of the legging.

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Reviewed 12/20/2019
by desertrun
Cycling Enthusiast
southern Arizona
Value Rating
Overall Rating
4 of 4 customers found this review helpful.
Keeps my legs warm down to 30F

Unlike my hands, feet, and ears, my legs tend not to get particularly cold. These keep my legs warm in dry desert winters down to 30F. There is a little bit of bunching behind my knees for which I'm subtracting one star, but this is a very minor complaint.

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Reviewed 1/4/2021
by Anonymous
Overall Rating
Nice leg warmers

Great warmers nice thermal lining, fits great!

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Reviewed 7/3/2020
by Anonymous
Cycling Enthusiast
Montauk, NY
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Warmer than one would expect given how thin the material is. Very little impact on leg flexibility

I bike in cold weather with it. There is nothing I dont like

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Reviewed 12/6/2022
by NJRider
Cycling Enthusiast
NorthCaldwell, NJ
Overall Rating
2 of 2 customers found this review helpful.
Perfect leg warmers for those 45 degree days

These leg warmers are perfect for chilly days when it's not quite cold enough for your heavy bike pants. They are comfortable on your thighs and don't slide down your knees like other leg warmers tend to. Tip: Wear the leg warmers UNDER your bike shorts.

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Reviewed 6/6/2020
by SaaSy Cyclist
Cycling Enthusiast
Portland, OR
Overall Rating
4 of 4 customers found this review helpful.
Perfect fit and weight

These fit so well, and I get the right amount of warmth without getting into the heavier thermal territory that is sometimes constricting and too hot. These are perfect

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