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Diluvio UL Shoecover

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Wind and Water Protection with Comfort Like Never Before

As the weather turns colder and wetter ride with pride thanks to the new and improved Castelli Diluvio UL Shoe cover. This cover combines the best of both worlds, with an improved fit and better seal thanks to a construction unlike any other.

Neoprene skins at the cuff keep water and road spray out so you can ride on without any fear of the current climate. The Velcro® closure under the foot delivers a comfortable compression that keeps your feet warm and safe from debris. A bottom opening accommodates road, gravel, and even mountain biking shoes so you can adventure with ease, diversifying your preferred rides. With sealed seams and a YKK® zipper water stays out so you can continue on the journey of a lifetime without anything to hold you back.

When cold winds and gray skies threaten to hold you inside, get back on the bike and show the weather who's boss with the cycling shoe covers perfected for your autumn and winter rides. The Castelli Diluvio UL Shoe cover works hard so that you can work harder, allowing you to fall in love with those cool-weather rides once again.


  • 3mm neoprene for water protection and warmth
  • Velcro closure under foot for perfect fit
  • Bottom opening accommodates road, gravel or MTB shoes
  • Sealed seams
  • YKK® zipper
  • Neoprene skins at cuff to keep water out
  • Temperature range: 2°C - 14°C (36°F - 57°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.


    Black/Silver Reflex - S/M

    Mfg PartNum: S20537010-2 

    Black/Silver Reflex - L/XL

    Mfg PartNum: S20537010-4 

    Black/Silver Reflex - 2X-Large

    Mfg PartNum: S20537010-6 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Freezing feet is a thing of the past
    by m.mulvaney
    Cycling Enthusiast
    Milton, FL

    I've used these down to 32F. I have pretty cold feet, so yes my feet were still cold but not numb and frozen. For me, that's a game changer!

    Reviewed 2/23/2021
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    Great shoecover for those of us that hate the cold!
    by cjharrer
    Cycling Enthusiast
    Downingtown PA
    3 of 3 customers found this review helpful.

    I am definitely a fair, warm weather rider. Wanting to keep some sense of outdoor activity this coming winter I bought these booties to keep my feet warm. My road shoes are vented, so I needed something to keep the air out and the warmth in. I could no be happier with these cover, I have taken them in a few mid 30 degree F rides and my feet have been extremely comfortable.

    These are a good value and work well, I did no care about water proof because I do not plan on any wet winter riding.

    Reviewed 12/25/2020
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    Great value
    by Anonymous
    Cycling Enthusiast
    Beaverton, OR
    1 of 1 customers found this review helpful.

    These shoe covers work just as advertised. Keep your dogs warm and dry with easy on and off due to full length zipper in the back. Throw 'em in the laundry to wash off the mud and crud. The stretchy material provides for a nice fit over my regular Shimano shoes. I wear a size 12US, 46Eu and the size 2XL shoecover fits great.

    Reviewed 1/11/2021
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    Stylish and warm, but watch the sizing.
    by Mithrilbike
    Cycling Enthusiast
    Davis, CA
    7 of 7 customers found this review helpful.

    I use these for "cold" rides from 40-55 degrees Fahrenheit. They look great, and they are well insulated so quite warm. I wear size 45 shoes and ordered the L/XL and they BARELY fit over the shoes. Inside they say they are for Euro size 40-44. I don't think that information was available when I ordered them.

    Reviewed 12/24/2020
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    Great shoe covers
    by lovecycling
    Cycling Enthusiast
    3 of 3 customers found this review helpful.

    These shoe covers have so far kept my feet warm during chilly weather rides. Out riding at 35F and kept the feet warm.

    Reviewed 12/14/2020
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    Keeps my feet dry on wet gravel rides
    by Jonnybean56
    Competitive Racer
    Portland, OR
    2 of 2 customers found this review helpful.

    I needed new shoecovers for my MTB shoes because I do a lot of gravel riding, and these fit the bill perfectly. My feet stay dry on 3-4 hour rides, which is exactly what I was looking for.

    Reviewed 12/17/2020
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