Bontrager Thermal arm and knee warmers – review

Effective and reliable arm and knee warmers for spring and autumn riding

Bontrager’s Thermal arm and knee warmers are an effective and reliable option for spring and autumn riding (or cool summer days, too). They might not do anything new or different, but they don’t need to.

The arm and knee warmers are sold separately for £24.99 and £34.99 respectively but, seeing as they’ll often be worn together and, by and large, do the same job, we’ll review them together here.

They are made from Bontrager’s Profila Thermal fabric, which has a soft, fleecy lining which is super comfortable next to the skin and as warm as you’d want when it comes to arm and knee warmers for the shoulder seasons. The thermal fabric does a good job at trapping warmth in, while also remaining breathable enough to wick away unwanted moisture.

Bontrager’s Thermal arm and knee warmers are well-suited to spring and autumn riding
  • Specification

  • Price: £24.99 (arm warmers), £34.99 (knee warmers)
  • Sizes: XS-XL
  • Website: Bontrager

On wet rides, the fabric offers a reasonable amount of water resistance. You’ll get wet but it takes about an hour or so of continuous rain or spray to soak through the fabric and it still retains a degree of warmth when that does happen. The Profila fabric does a fair job of keeping out wind chill, too, though you’ll feel air creeping through on fast descents.

All things considered, Bontrager have done a good job at putting together a set of arm and knee warmers which provide decent protection from typical spring and autumn weather.

The knee warmers are topped with a soft jacquard gripper with silicone print which does its job well under shorts. The added compression from the shorts also helps to hold the warmers in place. The arm warmers use the same style of gripper and, again, it’s perfectly effective.

On the shin, the knee warmers feature a well-sized, reflective Bontrager logo, adding a hint of visibility, while the coverage of the warmers and pre-shaped panels is pretty generous. The fact the fabric has plenty of stretch to it also means they move well when pedalling, without feeling restrictive.

Jacquard grippers with silicone print hold the warmers in place

There’s also a reflective logo on the arm warmers and their length is spot, means there’s a good overlap between jersey and warmer overlap, while also ensuring they fit right down to the cuff. The shaping of the panels means the arm warmers fit well and minimises any bunching or areas which could potentially rub. The seams are double stitched and sit flat against the skin, which also adds to the comfort factor.

The fit of both the arm and knee warmers is left and right specific, with a label to help identify which is which. It’s handy in terms of getting kit on quickly and with minimum hassle, and the overall quality of construction is top notch.

The warmers and left and right specific


Bontrager’s Thermal arm and knee warmers may not offer anything ground-breaking or different, but they’re very capable and comfortable pieces of kit ideal for bridging the gap between seasons.


  • Warm fabric with a hint of water resistance
  • Excellent fit; stay in place well
  • Simple, subtle styling


  • Not much to complain about
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