CastelliMen's Flanders Warm Long Sleeve Baselayer(Return to Product Page)

Form fitting and well made. I like the ventilation at the arm pit area. I wish the back was of a thinner material as that area gets less wind. I use it for cold days in the 30's with a fleece jacket and no jersey. By the end of a spirited ride my jacket is half open and I'm comfortable. Size wise I am 5'7" and 146 lbs and wear a medium which is very form fitting. When on sale I will buy a large, so you may want to size up.

I really like this undergarment. It is absolutely the best in temperatures from around 35 to 55 degrees when I wear I long sleeve jersey over it. This undergarment really helps to keep me warm and yet not too warm during long endurance events. I recently road a long Brevet and temperatures got down to 35 degrees as the day wore on and this was just perfect for those conditions.

Many base layers are skintight and uncomfortable. Although this is appropriately tight, it does not squeeze to the point of discomfort, and actually fits perfectly. Functionally, it provides just the right amount of warmth.

Great base layer. This, plus the Castelli Alpha jacket keep me warm on the coldest days (40-ish F.)