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Sale 85% Off$24.95 $169.00

Item # AAS0100

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Item # AAS0100

Say yes to warm feet

Fugu, the exotic puffer fish, is a lighthearted jape at how cyclists need to dress in the winter. The irony is deliberate. While winter Assos apparel, like this fuguBootie, are a bit bulky by comparison to other Assos pieces, they're lighter, thinner, and sleeker than other togs on the market. And we're happy to say that the fuguBootie doesn't deviate from this standard.

Assos' fuguBootie is largely comprised of 2.5mm neoprene. The ankle cuff is slightly higher, with a gripper to seal your socks and shoes from the elements. There's a cutout on the bottom for your cleat and heel pad. For extra warmth, a layer of strataGonLight has been added to the toe and front part of the bootie. The magic of strataGon is a laminate that does an amazing feat -- the micro-pores that allow sweat vapor to escape through the material close down when they don't sense heat, thus enhancing insulation when your feet need to stay warm. Furthermore, when the temperature in your shoes goes up, the pores open to increase ventilation when your feet need to cool off.

The fuguBootie is part of Assos' climaRange 7. Assos calls this range winterPlus, with an optimal protection range at temperatures around 21-43 degrees Fahrenheit. For ease of use, Assos has incorporated a zipper at the rear of the covers. This zipper is waterproof, and it includes a locking operation lever.

  • Winter-ready booties to seal out the elements
  • 2.5mm neoprene shields you from rain and wind
  • Add warmth to your toes with strataGon Light layer
  • Higher than usual cuff features gripper to cut out water
  • Cutout for heel pad and cleats to play well with your kicks
  • Ideal for temperatures from 21-to-43-degrees Fahrenheit
Tech SpecsSize
Tech Specs
[booties] 46% nylon, 28% polyurethane, 13% elastane, 11% polypropylene, 2% lastol
ankle support cuff
road cycling shoes
Recommended Use
winter road cycling
Manufacturer Warranty


Socks & Shoe Covers
US Men's Shoe Size   6 - 9 9.5 - 13
US Women's Shoe Size 4 - 7.5 8 - 11.5  
EU Shoe Size 35 - 38 39 - 42 43 - 46

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There are so many different versions of these...What is the difference between the ThermoBootie, the FuguBootie, and the Winterbootie? Basically, I need THE WARMEST shoe covers.

The Winterbootie would be the wamest, however it and the Fugubootie are discontinued. The Thermobootie is the newest slip on design without a zipper. Feel free to call in and speak with a Gearhead for any further clarification or cold weather gear recommendations.

Don't buy

  • Familiarity: I've used it several times
  • Size Bought: II

I've been wearing Assos exclusively for about 15 years with no problems. I've worn these booties about 10 times and like the other bad reviews the zipper broke. Of course I was about 5 days over the warranty period so I'm out the $170.

Unanswered Question

Are these booties waterproof?

Zippers a disaster

    My rating is 5 stars leaving out the zippers, 1 star for the zippers, so an average of 3 stars. A comfortable warm shoe when the zippers cooperate. Zippers will drive you crazy. You can get them to work but will need to figure out a system (clue -- work best when zipper is pulled STRAIGHT up -- even a modest angle to the side will result in non-meshing. Impossible to plan a ride without allowing 15 minutes to get the zippers right. BTW, they zip fine off the shoe, so perhaps the thinner your ankle the less likely a problem, but even with Size II covers on a Size 1 shoe (43), it is usually a struggle to get these right.

    Given these are about 3x the price of very good competitors, there should be no issues in performance.

    Enjoy the Ride

      I hate riding in the cold weather since my hands and toes are usually numb within 30 minutes if it's below 50 degress...I know I'€™m soft. That said, these Booties, and the Fugu gloves have changed everything. Had some friends talk me into a 40 degree ride one morning, which is typically below my threshold, but as soon as I started riding I knew it was going to a much better ride than expected. Feet stayed warm the whole ride, even descending Emigration Canyon, a popular climb here in Salt Lake City. No reason to bust your a$$ on the road and freeze. Having the right gear allows you to relax, be comfortable, and just ride. Assos is always worth the extra money when it comes to riding gear and these are certainly no different. The toe and heel reinforcement is great against abrasion, and the reflective zippers never hurt. I prefer these over the winterbootie_S7 due to the extra protect and warmth, but the winterbootie_S7 certainly has it's place. Feel free to reach out if you have any questions and/or concerns about fit.

      Size Purchased, I, Shoe Size: 42.5 (Sidi, Fizik, Specialized, Giro). (Could easily fit a 43)

      Bill Sherman
      Customer Account Manager-Bike
      Office: 801-204-4545

      Enjoy the Ride

      Do the zippers go on the inside or outside? have you had any problems with the zippers?

      If my shoe (pearl izumi leader iii) is a 43 which runs small really and is a pretty low volume shoe, should I get size I or II?

      Size 1 will be perfect Sean. Feel free to contact me - happy to help out.

      Bill Sherman

      Customer Account Manager-Bike

      Office: 801-204-4545

      I love these booties

      • Familiarity: I've put it through the wringer
      • Fit: True to size
      • Size Bought: ll

      I have used these booties for 4 seasons now and the zippers are still working just fine for me. These are hands down the warmest booties I have used to date. I would buy another pair of these booties

      Fugu Booties

      • Familiarity: I've put it through the wringer

      These things are great to be expected. Warm, great looking, and fit perfectly. One major flaw. The zippers on both boots are a pain. They open up and won't stay in the tracks. If I monkey with them, I can sometimes get them to work. The booties are only 2 months old. Note: I bought these from CC because I bought a new pair of other Assos booties and had the same problem on day one with the zippers. Put them on, look down and the boot is open. I AM NOT STRETCHING THESE. I have a size 12 shoes and have the size 11 as specified. I am returning to get another pair with hopefully more luck. They keep me warmer than my Castelli Duvios which are neoprene without the quality of these. But those damn zippers. They are finicky.

      I don't get it.

      I agree with the general problems outlined above. I find all booties have the same zipper issue. I've used three different brand of zippered booties in the last five years (two just this season) and had the same zipper issue. This is why I have not forked over the money for a pair of Assos booties. This is mostly because of my large shoes (size 12/49) and the fact that I XXXL boots are not available. The only pair of boots that work consistently are the Pearl Izumi quilted ones which have a long, wide velcro enclosure on the back. They aren't as nice as some of the others but they keep my feet warm and I never have zipper malfunctions because there are none.