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Castelli Mens Unlimited Trail Bibtight Dark Tarmac
Castelli Mens Unlimited Trail Bibtight Dark Tarmac
Dark Tarmac
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Castelli Mens Unlimited Trail Bibtight 2
Castelli Mens Unlimited Trail Bibtight 4

Castelli Men's Unlimited Trail Bibtight

Pricing and Order Section

Mfg PartNum:
rating(3 customer reviews)
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MSRP: $239.99
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"The Do-Everything Bibtight"

The Castelli Men's Unlimited Trail Bibtight is a do-everything bibtight with added storage, for all your adventures. Nano Flex 3G fabric to keep you warm and comfortable and protect you from light rain and wet roads. Two large cargo-style pockets. Designed for gravel riding but ready for adventure or endurance rides, or if you just want extra pockets.

Even though the temperatures start to drop in the fall, that doesn't mean you should stop heading out on gravel adventures. The Unlimited Trail Bibtight offers exceptional rain and wind protection with tons of extra storage. To make sure you can be comfortable even on the longest gravel rides, Castelli use their Nano Flex 3G fabric: warm, stretchy, luxuriously soft, and highly breathable, and on top of that it features their proprietary third-generation nanotechnology water-repellent finish.

The Progetto X2 Air Seamless seat pad will also make sure you stay comfortable over long distances or rough roads. Two cargo-style pockets allow for plenty of extra storage, with security flaps to make sure you don't lose anything, especially on rocky roads. To keep you from overheating, the bib straps are a stretchy mesh that not only helps regulate temperature but also ensures a great fit. The tight is completed with reflective details for added visibility.


  • Nano Flex 3G fabric is exceptionally warm and soft with great rain protection
  • 2 cargo-style side pockets with flaps over top to keep stuff from falling out
  • Reduced seaming for improved comfort and fit
  • Mesh bib straps don't hold moisture and allow for maximum breathability
  • Progetto X2 Air Seamless pad for long-distance comfort
  • Reflective details on back of leg with ankle zip closure for easy on and off
  • Weight: 392 g
  • Temperature: 4°C - 16°C / 39°F - 61°F

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.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.

Size Chart




Leg Type: Full Length 


Style Type: Bibtights 

Dark Tarmac - Small

Mfg PartNum: M4523526305-2 

Dark Tarmac - Medium

Mfg PartNum: M4523526305-3 

Dark Tarmac - Large

Mfg PartNum: M4523526305-4 

Dark Tarmac - X-Large

Mfg PartNum: M4523526305-5 

Dark Tarmac - 2X-Large

Mfg PartNum: M4523526305-6 


Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Unreal sale price for Castelli quality & functionality without the typical need to size-up...
by Anonymous
Cycling Enthusiast
Lake Chelan, Wa.

After many years of using Castelli products I was firmly in the XL size camp but after reading the previous review I opted to try these in size Large. I'm NOT Pro slender but an athletic 5'11 & 165lbs & the Large fits perfect. BTW, these bibs are described as having ankle zippers which they DON'T but rather have reflective strips that may look somewhat like zippers...

Four stars for now as I likely won't be using them until Fall rolls in...


Reviewed 6/19/2024
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Almost Excellent - Wish I Could Give Them 4.5 stars
by Anonymous
Cycling Enthusiast
Northern California
1 of 1 customers found this review helpful.

I generally love Castelli bibs, with the Endurance 3 being my go-to. Of course, Castelli's sizing runs very small, so you always have to adjust accordingly, going 1-2 sizes larger than most other brands, and I did the same when ordering the Unlimited Trail bibtight. For whatever reason, it turns out the fit of these is a bit closer to normal, so I didn't need to go up as much. At 6'1" and 195-ish lbs, I wear L or XL in most brands, but in the Castelli Endurance 3, which has a very snug compression fit, I always get XXL. In the Unlimited bibtight, XL would have been plenty. As a result, the body and leg fit is fine, but the length would be better for someone 1-3" taller, leaving a little extra material at the ankles that I usually roll up a bit.

The material is good and has kept me warm on 40-degree F mornings, and I suspect they'd be OK a bit cooler as well as in wet conditions - I just haven't tried that yet. The overall material and stitching seems on par with Castelli's usual top of the line standards, and the chamois is also very good on long (4-hour+) rides. I particularly like that Castelli seems to go for chamois that are on the thin side, but dense, so you don't get that "full diaper" feel that you find in some bibs with thick but soft padding. And the side pockets are really useful, though I'll deduct slightly for their unusual design, with the bottom 1" of the pocket being a pouch that extends out from the leg. It seems unnecessary compared to others I have where the bottom of the pocket connects flush to the leg.

Overall, after about 10-12 hours of riding with them, I am very happy with these bibtights. With a couple very slight differences, they would be a solid 5-star item

Reviewed 3/14/2024
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Great bibs!
by tyler
1 of 1 customers found this review helpful.

This is one of the best pair of bibit I�ve ever owned. The material is warm, but not overly cell, and the additional pockets make this great for road gravel or trail riding.

Reviewed 4/26/2024
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