The Next Generation of the MILLE Bib Shorts
GTS marks the introduction of the second generation of MILLE — an all-new bib short that builds on the iconic GT shorts Total Comfort formula with its plush double-layer insert, fatigue-reducing textile, and revamped fit. Ideal for pro riders looking for added comfort during training to everyday riders seeking maximum long-distance support.
ASSOS started by adapting the patterning of its S9 race shorts, using its two-panel "butterfly" lower to smoothly wrap your legs, lock the insert in place as you pedal, and reduce friction with its minimal seams. Above this, its Xbib straps feature calibrated stretch throughout, with the rear section using a single strap to form an A-frame for added stability.
The OSSIDIA textile's developed specifically for the MILLE GT c2 platform strikes the ideal balance between frictionless comfort and muscle-supporting compression. Its warp-knit composition is made with ultrathin, elastic yarns for muscle hold, breathability, and a silky-smooth wrap along your low back and thighs. The fit that results is a more responsive, compressive regularFit, ideal for a variety of body types and riding styles.
The heart of the GTS is an all-new insert, adapted from the GT using a double-layer memory foam construction and honeycomb top sheet. This multi-layered cushioning system provides targeted dual-density structural support for your sit bones, while the 3D top layer and kraterCooler ventilation holes increase breathability for added next-to-skin comfort.
Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.
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.
Style Type: Bibs
Black Series - Small
Mfg PartNum: 184.108.40.206.S
Black Series - Medium
Mfg PartNum: 220.127.116.11.M
Black Series - Large
Mfg PartNum: 18.104.22.168.L
Black Series - X-Large
Mfg PartNum: 22.214.171.124.XL
Black Series - 2X-Large
Mfg PartNum: 126.96.36.199.XLG
Very comfortable shorts. I'm 6'3" 180lbs, Large fits me great. The materials are top quality, slight compression on the legs, but very comfortable. Straps have enough stretch to keep things in place without feeling restrictive. I'm slightly taller than Assos recommend for Large, but have not had any issues. I've got an older pair of Assos bibs with the S7 pad which I'm a big fan of. The pad in these feels slightly denser, which I found more comfortable on the sit bones. Like the S9 pad, I'd still prefer slightly less material in the groin area. Best thing about Assos shorts is the pouch up front for your junk...keeps things nicely in place.
I wear these regularly. Most rides are around 2-3 hours. I have no complaints. I find the suspenders more comfortable than the overall style. The pad is plush. The fabric is super comfortable and the fit is functional. The price is high, but you get what you pay for.
I have stayed away from Assos for years because their S5 pads were bulky and not dense and after 30 miles, they were worthless. Now with the new denser, pads, I decided to give them another go. Unfortunately the legs are a bit shorter and the waist is cut lower so it pushes up my sides and looks terrible. Most bibs are coming up higher on the sides and longer in the legs. Assos, of course, is going in the opposite direction after they finally got a decent pad.
The straps are great and lay flat and of course the fabrics are nice as well.
I own a couple of mid-range Pearl Izumis, a pair of Castelli Free Aero Race 4s, and these. The Castellis are very good, but I like these a bit more. They have very different strengths and weaknesses.
The best part of the Mille GTS shorts is the pad. It's quite thick, has a great shape, and provides room where needed. Importantly, it includes a cutout. A saddle cutout does nothing if you have a plywood pad and only provides a benefit if the pad complements it. These shorts let me sit a bit more aggressively without discomfort.
My main complaint with the Castelli shorts is the lack of room up front. They are tight up there! The Assos shorts have a natural pocket that gives some room. It's like going from a studio apartment with no place to store your bike to a place with a proper garage.
These shorts definitely provide compression on the thighs. I'm 6-2, 190 lbs. and I went with large size based on a previous review. They fit fine, but I might prefer XL for more comfort. I must be a tweener and got a race fit over a comfort fit. Choose up or down, depending on your goal.
The materials are top notch and the leg grippers work well. (Same for the Castellis.) Where the two differ are the shape and straps. The Castelli straps are super light and attach close to one another at the waist. I find this comfortable. The Assos straps are heavier, stay perfectly flat, and fall wide down the torso. This is great if you don't want straps on the nipples. It's not as great at the waist. The waist cut is very straight and if the stomach has a natural fold, the top can be irritating. My solution is to always wear a base layer with them. I find it necessary with these, but not with my other bibs.
One last negative. On my first ride, I had a touch of chafing at the very top of the inner thigh. Applying a bit more cream there solved it.
Anyway, the pad is great, though it's so thick that it takes a bit long to dry. Oh well. The Castelli pad is a bit firmer and thinner and dries faster. With the cutout and bit of room up front, the Assos still wins.
My perfect bib shorts would have the Castelli cut and the Assos pad. Given that the pad is the key to comfort and I can mitigate the cut with a base layer and a bit of cream, these are my clear choice - especially for longer rides. If the Castellis had a bit more room where it counts, they would take the prize. Until I find something better, I'd buy these again.
These bib shorts are pretty comfortable, but not as good as the previous generation with the S7 chamois. The chamois on the Mille GTS is just not as good, yet plenty expensive. I wish I could still buy the bib with the S7 chamois.
I've used these shorts on several 75+ mile rides in temperatures ranging from the 60s to the 80s. They are comfortable, fit well, and provide good padding. I also have a pair of the more expensive Cento Evo. I like the Cento more. The Mille has a tighter fit with more compression, is not noticeably cooler, and has less sit bone padding than the Cento. If that's what you like, great. But for me it is only my second favorite pair of shorts. Still better than my Segoi shorts (my old favorites) but not as good as the Cento.
Very well made as you might expect from Assos, this is the first pair of bibs I've gotten from them and they are as nice as I had hoped. The longest ride I've for so far is 68 miles and they stayed comfortable the whole time, the chamois feels strange when off the bike but once seated it pretty much disappears. There is a lot of material up front that takes some getting used to but it's nice to hide the junk from the public eye, no one really wants to see that if we're going to be honest. These don't stretch quite as much as other bibs so if your in between sizes or have big legs you might want to size up. These are expensive and really don't seem much more comfortable than Castelli's bibs but if they last a long time as other reviews I've read have mentioned then they are definitely worth it.
I didn't realize how important bibs are until I began doing rides in excess of 100 miles. I took a risk on this purchase with the hope that they would remain comfortable on rides exceeding 8 hours. They delivered. I am very happy with my purchase and recommend them if you sit in the saddle for many hours.