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  • Castelli - Upf 50+ Light Knee Sleeves - Black
  • Castelli - Upf 50+ Light Knee Sleeves - White

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  • Castelli - Upf 50+ Light Knee Sleeves - Black
  • Castelli - Upf 50+ Light Knee Sleeves - White

Castelli Upf 50+ Light Knee Sleeves


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    5 Reviews


    Knee sheath.

    Protect your pins from sunburn and airborne allergens in the Castelli UPF 50 Plus Light Knee Skins. Fashioned from breathable, polyester-based Solare fabric, these lightweight knee skins provide protective coverage without risk of overheating when things get fast. Double-sided silicone elastic at the hems keeps everything comfortably in place for a distraction-free ride.

    • Item #CST00CK

    Tech Specs

    form fit
    UPF Rating
    Recommended Use
    Manufacturer Warranty
    1 year

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

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    Great for summer

    • Familiarity: I've used it several times

    I ride in the desert heat and sun and need serious protection. I got these in black. They are very light and cool to wear and true to size. I still use sunblock on my knees just in case, and the combo seems to work great. They stay in place and I barely notice them. I cut the inside logo tags off as they irritated my skin. Otherwise, they are perfect. They hold up in the wash. I'm going to order a second pair in white.

    Castelli Knee Sleeves Keeping Me Cool!

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size

    I just got these and the Pearl Izumi Sun Knees in the mail. These sleeves are VERY light weight and feel silky. I ordered the black in a small and they fit perfectly and did not slip at all on today's ride. The Pearl Izumi were heavier and the small was way too big.
    I live in Arizona where HOT is the name of the season from May to October. I have very long legs and finding shorts long enough for me is always a challenge and leaves me with lots of my upper legs exposed. Lately I have been getting a heat/sun rash and so I thought I would give these a try.
    I wore these this morning on a 30+ bike ride here in the AZ heat (temps topped out around 98 degrees). I found them to be comfortable and hardly even noticable and was surprised at how cool my legs felt. And I was so happy to NOT have any red bumpy rash at the end of the ride.
    Washing them now and will hang to dry. I do think these are definitely a winner. However, If things change, I will post it.

    JUNE UPDATE! Heat index is UP and these continue to keep me cool in 90+ degree temps. Truly a winner!!!

    So far, so good

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

    I've worn these ~2 times. It's been hot both days, but they didn't feel any hotter than riding without them. I was most worried about size. I'm 5'11", ~150lbs. My thighs are 21.5" around, my calves ~15". I'm a Large and they fit great. I wear about a 32/32 in pants. They've ridden down about 1 inch over the course of a 50 mile ride, but I think they'll be fine if I wear them under my shorts instead; they've got grippers on both sides, so they can be worn over or under shorts.

    Pretty Good, But . . .

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

    The top band capably maintains the legging on the thigh without feeling too tight. The calf hem is very nice - no elastic, just a flat hem. I wore this product twice - once with the thigh band on top of my shorts and once underneath my shorts. Both ways worked well, but I did find having the band on top of the shorts was more comfortable. No issues with the leggings falling down.
    I was disappointed after 5 hours riding that my thighs still showed some sun irritation. When held to the light, the material does permit rather good see-through. The fabric is very soft.
    If you are someone like me who must be vigilant about sun exposure, these are good for cloudy days or short sunny day rides. I will keep looking for a denser knit material for longer sunny day rides. I have also read UPF-rated clothing only protects from UVB rays and not UVA rays - must wear sunscreen underneath UPF clothing to block both ray types.

    It's true that UPF ratings are based solely on UVB protection, but that doesn't mean UPF-rated clothes provide no UVA protection. Clothes in general have been proven to have higher UVA/UVB protection ratios compared to the majority of broad-spectrum sunscreens.

    Good Feel, Functional

    • Familiarity: I returned this product before using it
    • Fit: True to size
    • Size Bought: Large
    • Height: 5'10"
    • Weight: 155lbs

    I tried these on after trying out a pair of Pearl Izumi sun protectors. The Castelli fabric felt softer. The Castelli fabric also felt cool on my skin. The Castelli also has a more functional silicone strip for the thigh area to keep them from slipping. The Castelli is lighter as well. Only gave them 4 stars because I noticed a seam starting to tear right out of the box. I'll fix it before it gets worse. I am 5'10 and weight 160. My thigh is 20 inches and my calf is 12 inches. I originally purchased a medium and they were too tight around the thigh. Put in an order for a Large the same day. Hoping they fit perfect.