First of all, don't get excited about these gloves having "Cervelo" across the back like the picture. I race a Cervelo and thought it would be cool to have the name on my gloves. They say "Castelli" across the back. Which is still cool. I lreally like these gloves. I am a Time Trialist and have several pair of tight-fitting, slick gloves. These are by far my favorite. Many riders think no gloves is best for air flow. These gloves are nearly like having bare hands.....except if you go down (how do you crash time trialing?) it's your gloves that hit the pavement first.These gloves feel great, fit great (see "sizing" below) and, I think, make me go faster. They look like they do anyway. The long cuff fits right over a long-sleve skin suit. They are about as easy to get on and off as a skin suit (tight like they should be). If you have a speed hat, skin suit and shoe covers, this will complete your gear. Sizing: I don't know where they came up with the size/measurements. I have a large hand and usually wear a large/extra large glove. My hand measures 7.5 in (19cm) from wrist crease to end of long finger. That would put me in the bottom end of the Medium glove on their chart. Not happenin'. I ordered the large and it fits tight/just right. I'm not sure I want to see the person that wears the XXL with a 12 inch (30.5cm) hand. Order your usual glove size and they will fit great. And Realcyclist will let you send them back if they don't. Race these gloves.