Castelli UPF 50+ Light Arm Sleeves

GBP 24.65

RRP £29.00


Save: £4.35

Size Guide

Castelli Men's Clothing Size Guide
  S M L XL 2XL 3XL
Chest (cm) 92 96 100 105 110 115
Waist (cm) 80 84 88 93 98 103
Hips (cm) 94 98 102 107 112 117
Inseam (cm) 82 83 84 85 86 87


Castelli Shoe Cover Size Guide
  S M L XL 2XL
Men's/Women's EU Size 39-40 41-42 43-44 45-46 47-48


Castelli Men's Socks Size Guide
  S/M L/XL 2XL
Men's Shoe Size (EU) 35-39 40-43 44/47


Castelli Gloves Size Guide
Men/Women <17cm 17-20cm 20-23cm 23-25cm 25-27cm >27cm


Item limited to max quantity of 5000

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In stock


Usually dispatched within 24 hours

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Average connection time 25 secs

Average connection time 25 secs

Suprisingly useful

We can officially only rate these warmers at UPF 50+, but in our laboratory tests they actually blocked 99.8 percent of damaging UV rays. We used a polyester base that is not only more effective than nylon at blocking UV rays but is also much better at keeping you dry, which means these skins are better in both cooler and warmer conditions. We’ve kept the construction very clean to eliminate seams that can rub, and we used our double-sided silicone elastic to make sure they stay in place. They fold up extremely small, so they’re great to stick in your pockets for your next big mountain day.


  • Solare fabric keeps the chill off without causing overheating
  • UPF 50+ protection
  • Polyester based for excellent moisture management
  • Double-side silicone elastic at top for excellent grip
  • Leg Skins: Ankle zip for easy on/off


  • Windproofness
  • Waterproofness
  • Insulation
  • Breathability
  • Lightweight

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: In stock.

Express Delivery

If ordered before 11pm, delivered by courier next working day.

How will I know it has been sent?

You will receive an email to confirm when your item has been sent.

You can also check the status of your order and individual items by accessing My Account details and following the prompts.

Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.

If I'm not completely happy with my item?

Please see our returns policy.

Frequently Bought Together

Castelli UPF 50+ Light Arm Sleeves - Black - S
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Castelli UPF 50+ Light Arm Sleeves - Black - S
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Recommended item
Castelli UPF 50+ Light Leg Sleeves
from £42.50
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Castelli UPF 50+ Light Arm Sleeves - Black - S + Castelli UPF 50+ Light Leg Sleeves

from £67.15

Add both to basket
Castelli UPF 50+ Light Arm Sleeves - Black - S
This item
Castelli UPF 50+ Light Arm Sleeves - Black - S
Select size
Select colour
Recommended item
Castelli UPF 50+ Light Leg Sleeves
from £42.50
Select size
Select colour
Add both to basket

Customer Reviews

Overall Rating : 4.57 / 5 (7 Reviews)
  • 5 5 star reviews
  • 1 4 star reviews
  • 1 3 star reviews
  • 0 2 star reviews
  • 0 1 star reviews

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.

Great accessory

This is a great accessory for transition season and times of day. It's great to be able to take it off after you warm up and stow it in your shirt pocket. Much better than having to take off a whole long-sleeved shirt or jacket. Shipped was efficient and quick. Again, not sure if it's because of the new shipping method (which is much quicker than how it used to be), but I now get charged duty when my packages pass through customs.

Castelli upf sleeves

The sleeves fit perfectly and look great. They block the UV very well. The only issue is that I do find them too warm on very warm days. I find that for anything above 25C they are just too warm.

Sun Cool Blockers

Keep me cool and more aero while protecting my skin without creams. Feel like unnoticeable 2nd skin. I have ridden under clear sky full sun in the middle of summer at 35-40C and I was impressed on the great “cool refreshing windchill feeling” in my arms - I guess a combination of my sweat being evaporated through the fabric. Score: 10/10

Snug fit

Have tried these out once on a 50k early morning ride on a balmy Oz day. It was perhaps 28-30 Celsius forecast but hadn't quite reached that. It was fairly humid though. I was starting to run a little warm towards the end of what was a fairly challenging ride. I chose the black sleeves so perhaps white would be a better choice for the heat. All the gear I was wearing that day was a tight fit and black, so the sensation may not have just come from the sleeves. I ordered the medium. I'm around 5'11" (181cm) and 76kg or thereabouts. My arms are lean/athletic and the medium's were quite a snug fit, to the point that they take a bit of getting on/off if you are being careful about not stretching them excessively. Early days yet. As long as they keep their shape they will probably do their job. Will be interesting to see how they go on a longer, warm ride when the sun gets up higher.

Sun Arms - Summer Protection

After trying to source this product locally (NZ), I turned to the online world, and happy to say the product is fantastic, good quality and feels comfortable on, thank you to ProBikeKit for making this product available in NZ.....

Light arm sleeves

Very light and comfortable to wear. Surprisingly keeps arms very cool due to moisture wicking effect. Highly recommend in Australian summers.

A summer must-have

perfect sizing and fit. I will get a lot of use out of these in our harsh southern hemisphere summer.

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