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Assos LL.haBu_s5 Cycling Bib Tights

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Item # AAS0153

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Item # AAS0153


With its S5 series, Assos has you covered for any weather condition. From chilly to downright cold, the LL.haBu_s5 Bib Tights provide protection when shorts or knickers are inadequate. Truthfully, while we appreciate a bare lower leg, there's a point where the warmth and comfort of Assos' Roubaix fabric goes further than a healthy layer of embrocation.

Assos' LL.haBu_s5 bib tights use a combination of the soft Roubaix and Roubaix Q fabrics. Roubaix is a thicker-than-average Lycra with a wicking microfleece interior. It provides the kind of warm, fuzzy feel that can be the difference between soldiering on, or turning back for home when the weather is bleak and dismal. The panels that line the seat area and inner leg are made from the ultra-warming Roubaix fabric. While the outer portion of the legs and the back of the knee use Roubaix Q — a material that starts its life as Roubaix. However, Assos cuts a waffle pattern into the microfleece interior for Roubaix Q. The reduction in material doesn't decrease the warmth, however, it does decrease the weight and bulk in comparison to standard Roubaix. This is especially important at the knee. The lighter Roubaix Q material won't bunch and chafe at the back of the knee when you pedal.

The anatomic shaping of the Roubaix and Roubaix Q panels allow the S5 bib tights to fit against your skin, and to move smoothly with your legs as you tick away the winter miles. And since you'll be using the tights for long base miles in the saddle, Assos gave the bib tights the FI.Mille_S5 Chamois. It's curved to perfectly fit your body, and it has a built-in channel to reduce genital pressure. Additionally, it has the same softness and heat-ventilation dimples of the FI.13 chamois. Compared to FI.13, the FI.Mille insert has been given a "long distance" designation by Assos. This is due to the increased surface area, its lessened stretch, and its built in stabilizer. Collectively, the Mille's characteristics cause it to move less during your pedal stroke, and thus minimizing abrasion and pressure. One aspect of the FI. Mille chamois that we love is that the front portion is cut high enough to prevent 'podium bulge' for the moments that you'll be spending off the bike in the cafe or general store.

For maximum ventilation and stretch, Assos gave the bib uppers a large mesh insert in the back. As is often the case with Assos, a few small details make the difference — the bib tights have foot stirrups to hold the legs in place throughout your ride, a 10cm zipper is used in the front to facilitate natural breaks, and a small, but crucial, patch of windproof material is strategically placed at the top of the pelvic region.

The Assos LL.haBu_s5 Bib Tights are available in the color Black and in sizes Small, X-Large, XLG, and TIR. The bib tights are considered to be part of Assos' climaRange.5. Allow us to translate Assos-speak — the bib tights provide complete protection around a temperature range of 41 to 51 degrees Fahrenheit (5 to 10 degrees Celsius).


Tech Specs

[panels] Assos RX, [tights] Assos RXQ
yes, FI.Mille_S5
Chamois Thickness:
Removable Chamois:
zip closure
Recommended Use:
winter road cycling and racing
Manufacturer Warranty:
limited lifetime

Size chart


Men's Apparel
Leg & Knee Warmers 0 I II
Height 4ft 11in - 5ft 2in
(150 - 159cm)
5ft 3in - 5ft 6in
(160 - 169cm)
5ft 7in - 5ft 10in
(170 - 179cm)
5ft 11in - 6ft 1in
(180 - 185cm)
6ft 1in - 6ft 3in
(186 - 190cm)
6ft 3in - 6ft 5in+
(191 - 195cm+)
XLG but wider
Arm Warmers 0 I II
Chest 35.4in
46.5+ in
How to Measure:
For best results, take measurements over your underwear.
Measure around the widest part of your chest.

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Avg. ride time: 24h 20m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great Bibs

  • Familiarity: I've put it through the wringer

I have used these bibs from the moment they arrived (literally, the UPS guy showed up as I was getting ready for a ride) and have worn them every day for the last three weeks. The conditions were uppers 20's to 50's (F) with wind on many occasions and wet roads. The duration of the rides were all three hours or more. My size was XL and this Assos size seems to fit me (6' 1" and 200 lb). My rides involve lots of hills and often lots of wind and recently lots of melted snow and dirt in the roads.

The fit is great: snug getting on but not binding *especially* once I am in a riding position. While riding with these on I find that it is easy to forget you have them on. They are thin enough that you don't notice but warm enough so you also don't notice. They block the cold and most wind but allow heat to escape after climbs.

Previous reviews mentioned two items that I saw as potential problems as well: (1) the zipper and (2) the stirrups.

The zipper is very small gauge and I can imagine if you are not careful that the zipper would come apart. The zipper is short (about 6 inches) and care needs to be given to it when pulling on and off the bibs. The tight is snug enough that you really need to use your hands to hold the zip together while zipping it up or down. I think the tension in the fabric in that region when zipping up or down could easily pull the zip off track. Just pay attention when pulling the zip up or down and you should have not problem.

The stirrups initially were quiet a challenge for me---at least for my right leg. It is easy for the lower leg of the bib to be turned around 180 degrees at the bottom and once you put your leg into it you can not easily determine this. Why? There is no clear front and back and the seams curve so you can't use them to help guide you. Seems silly I know but really it is very easy to get the lower part flipped. I eventually had to look closely at an online photo and just look at the bibs hanging from a hanger to make sure I had them on correctly. Once I figured out the front and back of the lower leg, pulling them on correctly became easier. However, I would say the first five times or more I had one leg backwards. The fit is snug so it is nearly impossible to twist it around once you notice this and it requires pulling out your leg and restarting. Again, once they are on correctly you completely forget they are on.

Cleaning: The bib came with a really useless wash bag. The bag is mesh and about the right size for a hat or a pair of socks and (to avoid zipper damage during the wash) is impossible to keep closed during the wash. I gave up on this bag and just turn the bib inside out with the zip up and wash on the gentle cycle and hang dry (like I do all my Assos gear).

Chamois: Based on some reviews I was concerned it was be too thick as I prefer thinner chamois but I find it very comfortable. I was surprised how long it is from front to back. It is almost 50% longer in length than of some of my chamois. Turns out this adds greatly to overall comfort.

I think these bibs will work for me for all but the coldest winter rides. I will need something warmer for rides from 10F to 20F I think.

Perfect for Real Winters

  • Familiarity: I've put it through the wringer

If your winter consists of only a few days below 45 degrees, these aren't for you. However, if you're like me, and half of your year is below 40 degrees, it's hard to do any better these tights. The fit is exceptional, especially behind the knees, and the uppers provide a nice added touch of warmth. I agree with the comment below that the FI.Mille chamois is a bit overkill for those of us who prefer a more minimal feel on the saddle, but regardless, it's still really comfortable.

My only complaint would be that the stomach zipper is a little finicky, and admittedly, it has run off of the teeth a couple of times. This is me looking for a fault, though. So, if you refuse to let the cold confine you to the trainer, I highly recommend these tights.

Perfect for Real Winters

Nice fit but overly thick chamois.

  • Familiarity: I've used it once or twice and have initial impressions

First Impression: The overall fit is outstanding and very comfortable. I have some initial reservations about the chamois though - it is so thick it feels like riding with a pillow on your saddle. That makes it hard for my sit bones to find the saddle's sweet spot. The thickness of the pad also drapes over the saddle nose to increase the effective saddle width, with potential for interference with leg movement. On to the legs: The stirrups that go under your foot are a good idea to keep the tights in place while eliminating the need for a potentially irritating leg zipper. The stirrups are not labeled though so you have to be careful to slide your foot in correctly without twisting the lower leg backwards. Overall fit is a nice, high compression but the fabric still conforms and flexes where needed to maintain comfort while riding.

Worth Every Penny.

  • Familiarity: I've put it through the wringer

These tights are probably the best cycling kit investment I have ever made. These are so good, I even plunked down on a second pair! The fit is sublime, like a second skin. No bunching, no slipping around. The pad is on thicker side, but very comfortable and stays in place well. For proper fit the bibs should feel quite snug when standing, but once on the bike they are perfection. I am 6', 170 lbs, 33" waist, 38' chest and size L is perfect. I have used them in temps from 4 - 12 Celsius (39 - 53 F), both wet and dry. If it is super windy and cold these are probably not quite enough, I prefer to have something with windproof panels on the front when the temps get down near freezing (I have older LL Winter tights sans chamois for those days).

Seriously, if you are considering buying these tights just pull the trigger - you won't regret the decision but I won't be held responsible if you end up buying 2 pair.

Absolutely amazing. Buy them now.

  • Familiarity: I've used it several times

These tights are amazing. They are absolutely worth the money. I was skeptical at first but it is unbelievable how good these things are. Save up some money, buy these tights, take care of them, and just use them every ride. I used to think there was value in purchasing many different bibs / tights and alternating them, but not I would never do that. Simply buy a top-of-the-line pair of bibs and tights and roll with those until they wear out, which with Assos, will not likely be very soon.