Raymond V.wrote a review of Ridley Helium SL Road Bike Frameset - 2016 on January 3, 2018
Familiarity: I've used it once or twice and have initial impressions
Great frame, but it does run large I purchased the medium frame after riding a 57 Bianchi siempre pro. Should have gone with the small frame. I’m 5’11 with a 33 inseam. It fits well if your looking for endurance geometry if your looking to race get the smaller frame.