It’s that time of year when Zwift is more realistic, but outside is calling. So, in spite of near-freezing daytime temperatures and snow on the ground, I donned the Trek Circuit Thermal Bib Tights and hit the road.
Trek Circuit Thermal Bib Tight Features:
- Thermal fabric with brushed interior retains body heat
- Articulated leg for better fit
- Elite inForm dual-density chamois
- Soft, low-profile bib straps
- Upper-back mesh panel for breathability
- Tapered ankle design without zippers
- Fitted cut
- MSRP: $149.99

Affordable, cold-weather bib tights
As Trek further expands their branded clothing line away from Bontrager, the move may seem limiting to some. But, the subtle branding deployed on this year’s crop of Trek apparel is appealing to even the pickiest of cyclists. And, the great value you’ll always find here is hard to ignore.
When searching for a set of winter-ready bib tights, you do have to make some sacrifices. Chamois comfort is typically lacking compared to the best summer bib tights on the market. Why is that? Well, even riders who regularly spend 3-4 hours in the saddle in the summer just aren’t going to spend that much time in the winter. With that, Trek has packaged high-quality materials that keep you comfortable when temperatures drop into the 30’s. And, the chamois is great for 2-3 hours.

The Trek Circuit line of apparel, helmets and shoes is always a go-to for those looking for quality gear and the best prices. After months of testing, I can still say that’s the case with the Trek Circuit Thermal Bib Tights, but they do have some quirks.

As opposed to other tights on the market, Trek has chosen to utilize a thicker, softshell material on front-facing panels. While this delivers the ultimate in weather protection, it does come at the expense of stretch. You’ll first notice this when pulling them on — particularly in the calf area. While I applaud not having zippers (which often feel bulky), the simple leg cuffs are preferred. However, there is little stretch, which makes it difficult to pull up a pair of long socks, like the Endura Hummvee Waterproof Socks. That lack of stretch also unfortunately squeezes my calves with every pedal stroke.
Moving upward, the front panels on the thighs also feel restrictive during standing efforts. Again, protection seems to trump stretchiness, which isn’t the end of the world. Road rides into the low 30’s remain comfortable and the fabric does breathe well. All that cozy comfort is maintained by a high-performance DWR treatment that sheds moisture in a jiffy.

The uppers are fairly minimalistic compared to some winter bib tights. With wide straps, you’ll find comfort with or without a base layer. And, without extra material, the uppers breathe well and can stretch in the front when it comes time for nature breaks.
Fit: I’m 5’11” and 175 lbs, wearing the size medium.
The Good
- Warm and cozy down to the lower 30’s
- Minimalist mesh uppers don’t interfere with layering
- Good chamois for winter use
- Great weather protection
- Zipper-free cuffs
The Bad
- Feel stiff
- Long socks are hard to put on
- Squeezes my calves
The Bottom Line: Trek Circuit Thermal Bib Tights Review
If you’re looking for an affordable winter bib tight, the Trek Circuit Thermal is a great option. With excellent warmth and weather protection, you’ll certainly stay warm, I just wished for a little better stretch for more natural movement during hard efforts.
Buy Now: Visit TrekBikes.com