Reviving this thread I should protect arms and legs due to a previous melanoma 'incident'. I see most suggestions are for tops but here in Spain I find my legs burning far more than arms. I am looking for summer weight lycra longs with UV protection.
I just cycle in leggings all year round. They don't officially offer any protection, but my skin is as fair as you can get plus a redhead to add to the mix. On top of that I have an issue with one of my legs after a nasty dog bite, I can't feel half of the back of one of my calves so can't tell if it is burning or not.
I use late spring/early autumn leggings that Assos do and have never had any issues. I know they can be very warm on hot days, but for me that is preferable to burning and I have never burnt through them.