Thermal, reflective cycling knee warmers
Thermal, reflective cycling knee warmers
Thermal, reflective cycling knee warmers
Thermal, reflective cycling knee warmers
Thermal, reflective cycling knee warmers

Alpine Thermal RT Knee Warmers

23 reviews
Regular price$52.00
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OVERVIEW: Reflective Cycling ClothingKnee warmers are ideal for cyclists who like to adapt to changing temperatures and weather conditions during their ride. They easily pack into a jersey pocket and can be taken off or put on in a matter of seconds. These warmers also include reflective fabric panels for added safety in low-light conditions.

Not familiar with Knee Warmers?
Read "When to Wear Arm, Leg and Knee Warmers."

FABRIC & CONSTRUCTION: The next generation Alpine Knee Warmer has been taken back to basics. Leveraging a high-stretch fabric, we simplified construction to a single seam for reduced chafe points without compromising fit. An all-new bottom cuff design is made from fabric featuring Reflective Technology™, providing visibility from all angles. A large, reflective logo adds additional visibility in low-light conditions. We love the ThermaGuard fabric for its compressive fit and soft feel against skin. It's not overly warm while providing the perfect amount of protection for those days where you need to cut the cold without overheating. The gripper-bands are possibly the most critical component of any warmer, so that's why we searched high and low for the best combination of sturdiness, stretch, soft-touch and grip. We think we've found the perfect answer with the wide, stretchy and soft grippers in these warmers. While they hold incredibly well on their own, we went ahead and added a tenacious silicone print to the interior (skin side) to ensure the bands stay locked in place. We recommend washing the warmers prior to wearing to activate the Silicone for best grip. Warmers work best and stay in place when placed directly on the skin, not over a short as Silicone is not designed to grip fabric. 


  • ThermaGuard fabric-slight interior loft, breathable, wicking and lightweight
  • Reflective Technology™ for added safety
  • Interior ultra-soft silicone gripper at thigh and calf opening

Pair with any shorts or bibs when the temperature dips below 65 or 60°. Wear with the super versatile Keystone Vest and set of Arm Warmers in the 50's or even the 40's and you'll be ready for a long spring or autumn day in the saddle.


We recommend you purchase knee warmers in the same size that you typically wear for shorts or bibs. See the size and fit chart for assistance.

Have questions about sizing, fit or garment usage?

Don't hesitate to contact us.

Yosh  Melissa  Ryan

We are here to help and answer all your questions!


Or, send us an email and we will get back to you as soon as possible.

Fit Guide


Items designed to provide a traditional performance fit.


Items in this category have been designed to provide an aerodynamic form fit.

Second Skin Fit


Items in this category have been designed to provide an ultra form fit.

Fit Videos


Size Charts

Custom cycling clothing size chart example - man
Pactimo Cycling Clothing Size Chart
Custom cycling clothing size chart example - woman

Kid's Cycling Clothing Size Chart

PLEASE NOTE: Not all garments are available in every size listed on size charts.

Arm, Knee and Leg Warmer Sizes

Shoe Cover Size Chart

Custom cycling sock size chart

Cycling Glove Size Chart

Measuring Tips 


Using a soft measuring tape, bring the tape across your back under each arm, around the front. For women, measure the widest point of the bust. For men, measure around the largest part of your chest.


Bend to one side to find natural indentation in torso. This is your natural waist. Run tape around waistline, keeping tape parallel with floor. 


Stand on a level surface with feet together. Measure around fullest part of hips and bottom (approximately 7" - 9" below waistline), keeping tape parallel with floor.



Typically delivers in 3-5 business days
(Standard Shipping Option)


USPS Priority

1-3 business days.

USPS Priority Service Map

USPS Shipping Map

USPS Priority Express

1-2 business days.

* Please note: All orders placed after 8 am will be fulfilled the following business day.

FedEx 2-Day Shipping

Arrival in 2 business days.

* Please note: Orders placed after 11 am will be fulfilled the following business day.


Additional Information for USA Orders

All orders must be shipped within the USA, Puerto Rico or an APO.
At this time we do not offer shipping to Canada.

All Made-to-Order (MTO) and Jersey for a Cause items are delivered 14-16 days from the date of purchase via FedEx Express. Please note that FedEx cannot deliver to PO Boxes. If you order an MTO item and use a PO Box, your order will be shipped to our Denver office and forwarded to the PO Box via USPS. 

PLEASE NOTE: Information on this page does not apply to custom clothing orders.
For information about Pactimo Custom, please visit


Customer Reviews
4.4 Based on 23 Reviews
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Filter Reviews:
  • knee warmers
  • Pactimo
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  • weather
  • knees
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  • thighs
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Adam S.
United States United States
Good - a little short for me

These seem good; but, they are a little short for my taste.

United States United States
Alpine Thermal RT Knee Warmers

Best knee warmers yet. Warm, super comfortable with some compression. I wore these on a recovery ride recently in mid 50 degree weather, they stayed in place from the moment I put on until the end of the ride. Therapeutic comes to mind; love them!

Lori L.
United States United States
Perfect knee warmers

I like the fit and room for my calves. They stay where they are meant to stay and add warmth to knees.

Lee T.
United States United States
Won't stay up

Nice knee warmers but they work their way down my calves.

Francisco G.
United States United States
Not what I was expecting

They are warm, but not what I was expecting

Peter Z.
United States United States
Knee warmers

They fit great, very comfortable and warm.

Robert B.
United States United States

I have 5 Pactimo bibs. For me, the Raptors are better than the “12 hr.” My everyday bibs and lasts for years! Top shelf

John H.
United States United States
Thermal knee warmers

These are perfect for those days where the weather could go either way. Stay in place unlike some others I’ve used that slide down

Sia V.
United States United States
Knee Warmers for the WIN!

So, I had always thought these things looked to thin to make a difference, but I was wrong. These are awesome and totally make a big difference in how comfortable your knees feel. As expected, Pactimo with the high quality threads. Very nice, just make sure you know how to wear them (under the shorts) because they will slip down if you don't put them on correctly. Also, I have fairly large legs and got XL, but I should've gotten L because they will slip down if they aren't hugging your thighs. Love em!

jayson f.
United States United States
nice and warm!

good length and not too long that it basically covers all the skin as i run hot when i ride.

Reggie F.
United States United States
Knee warmers

At first I was a little worried, but since my purchased I have used them at least 10x and my knees / thighs are warm. Lowest temp I’ve been out is 25 degrees.

Jason L.
United States United States
Run large, not as good as last version

These run large - the small in the last version fit me but this new version in small fell down off my knees with a little movement. Also the silicone at the thigh is not super sticky or as good as the last version, and with fewer panels on the piece it is not as fitted in a bent-knee shape.

Margaret C.
United States United States
Just what I needed

I’m 5’2”, so “knee warmers” turn into leg warmers, and they are PERFECT for me for that. Wore them for a chilly ride just before New Year’s, and they kept me very happy.

Ryan D.
United States United States
Knee warmers are pretty simple but these do the job quite well

Well made (like all Pactimo gear), these knee warmers are nicely contoured and have ample leg grippers at both ends. Plus there is the nice reflective detailing at the bottom. Good addition for those days with variable or changing weather.

Thomas F.
United States United States
Another Great Purchase from Pactimo

I had a pair and bought them for my wife as a Christmas gift. As expected, she absolutely loves them! Another great Pactimo product!

Jeffrey L.
United States United States
Great for those kindof chilly mornings

I've used these on a few rides now during the morning lows and they're preforming quite well. It's my first time using just knee warmers and I'm liking having a little more coverage but a little bit of area to breathe as well. The fit is great and while I haven't put them to the test yet the reflective bits will come in handy when I start to ride endurance events again. Sizing wise I bought the size I usually buy my bibs in.

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