How do I choose the right sizing for this sleeve? For Rapha jerseys, I wear a size M and my bicep is just 27.5cm in diameter (climber build 😂). Castelli Size Guide for the sleeves isn't helpful in my opinion. Thanks!

Omar

Excellent !

Familiarity:

I've put it through the wringer

Fit:

True to size

Size Bought

M

Height

5` 10"

Weight

153 lbs

I really like these Castelli arm sleeves. I agree with the other positive reviewers to date. I'm 5'-10.5", 153 lbs (140 lbs if I'm in racing weight). I fit a medium sized Castelli jersey. I bought medium sized arm sleeves, and they fit me well. The sleeves' slim fit and the longer length are a plus for my long, slim arms. The Castelli arm sleeves are a bit more insulating than typical summer-use arm sleeves, but I don't notice the slight extra warmth until it gets above 85ºF or so. Still, they are good to use on those warmer days. The silicon grippers are nicer than other sleeves I've used and work well without being too too tight. The fabric does feel luxurious.

ANDREW G.

Not great

Familiarity:

I've used it several times

Fit:

Runs large

Size Bought

M

Height

5` 4"

Weight

156 lbs

I’ve tried other brands that were much better. Yes, this will block the sun, yes it feels cool when you wet it, but it does not feel cool when the wind hits it (like others I have) and feels heavier weight compared to others as well. I wanted to love it as the fit is good.

Lee Y.

does its job

Familiarity:

I've used it several times

Fit:

True to size

Size Bought

Medium

Height

5` 10"

Weight

150 lbs

stays in place, fits well, provides enough warmth, and protects the skin from the sun. it's perfect for those slightly chilly rides or when you're in between sun and cover. i would even consider wearing on a warm day to use for sun protection.

Jon P.

Do the UV sun sleeves work while worn inside out?

Bruce Kirschner

Hello, I am interested in these arm skins. I have long arms, so I am looking for the length of the sleeves. I have tried similar sun sleeves from pearl izumi and sugoi but they have both been really short. I don't care if I need to order XL and have them fitted to my arms. I typically wear tops in S or M. Please share the length of your sleeves! thank you!

Edwin

Great

Familiarity:

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

You should consider to wear sleeves some days and protect your skin, these sleeves will do the job, nothing to complaint, check sizing, these are long

Javier Meza

great protection

Fit:

True to size

Size Bought

small

Height

5` 4"

Weight

124 lbs

they can get a little warm on a hot day but nothing too bad. helps even wipe the sweat. i got them vs having to put on block so i really like the protection.

Aja S.

best castelli product

silk feel and more like santini jersey feel , best castelli product.

1831957228233

Comfortable, and better than sunscreen

Familiarity:

I've put it through the wringer

Fit:

True to size

Size Bought

xl

Height

6` 0"

Weight

185 lbs

I wear long sleeves on almost every ride, so I use these quite a lot. They are more reliable than slippery sunscreen, which sweats off and must be re-applied. In my experience they do not make a ride appreciably hotter, but they go on quickly and do an excellent job of blocking the sun. It provides an evaporative cooling effect so you will get some cooling as you get moving and sweat and/or wet your sleeves. I like that the silicone grippers are on both sides of the sleeve. It will help keep your jersey sleeves from riding up and enables you to wear the black sleeves inside out if you prefer not to show the logo. The white sleeves keep the sun off just as well but the logo is noticeable when used inside out. They are not a great alternative to a true warming sleeve - these are lightweight lycra so even if paired with a three-season jersey do not expect them to add any warmth; the wind blows right through them. I got the XL based on my weight. The sleeves fit fine around my forearms and biceps but are long relative relative to my stubby t. rex arms. Not much I can do about that, so I usually fold them over for a more comfortable fit. The dual-sided gripper makes this work well.

Case

Quick Drying & Cooling Fabric

Familiarity:

I've put it through the wringer

Fit:

True to size

Height

5` 8"

Weight

160 lbs

Castelli arm skins are a quality product. After two years of use they are still holding up as if they are new. The silicone grippers are in top shape and I love that it is a consistent band of silicone all around the arm opening. I own Gore Bike Wear windstopper sleeves and I've tried Pearl Izumi SPF protection sleeves. These two brands don't have a solid silicone band like the Castelli sleeves. It's a testament to the details that Castelli curated. Granted, the windstopper sleeves are intended for colder weather but the Pearl Izumi are for warm weather. I can tell you the black PI's felt warm when I tried them on whereas Castelli skins has a minty cooling effect in black and white colors. Regarding hot spots, there are none due to flatlock seams. I recommend cutting the washing instruction label, it bunches up and gets annoying. For reference, I've used these in 105 degree weather last year and they felt great. Not as cool as when it's about 95 degrees but they dried quick and kept my arms from burning and tanning. If you need any of these Backcountry is the right spot. My local bike shop has to special order them and if you lookout for specials, you can get a pretty sweet deal here.

Erick Rodriguez

THEY WORK, BUT....

Familiarity:

I've put it through the wringer

Fit:

True to size

Size Bought

large

Height

5` 11"

Weight

152 lbs

These arm skins work (mild to warm days), but on intense hot days.... my internal body temperature feels warmer. I was hoping that these skins would cool my arms on those hot days but that's not the case for me. The fit is good, they are constructed well, and easy to wash.

Gary