I wear a 8.5-9 and wear a 41.5 in the Sidi Genius. I have heard the half sizes are the same length but a little wider than the whole sizes.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan
Tokie, what kind of cleats and pedals do you use? Do you have the same cleats, set up in the same way, on both pairs of shoes? I've been told that cleat positioning is a fairly important component of bike fitting. If you'd like to try and make the shoes work for you, try getting help at your LBS, because adjusting the cleat position, or using a cleat with more float might fix your problem! Those blue G5's are beautiful, and they don't make that color anymore.![]()
As far as sizing goes...
Sidi makes their own Brannock (foot measuring) device. If you measure your foot properly, it's incredibly accurate. That means wearing bike socks, heel right up against the back, and putting weight on the foot you're measuring so you see what size it really is when your arch collapses and the foot expands. A while back I had some questions about Sidi sizing, but I should have just trusted their Brannock, because the size it said was exactly the size I needed!
Call and ask local bike shops if they have the *Sidi* Brannock device. If you can't find one that does, use Sidi's shoe sizer. It's a PDF form that you print out, cut into two strips, and then use to measure your foot. I've uploaded it here.
Good luck!![]()
Hi everyone! Thanks for all the info on Sidis and cleats. I use speedplay X pedals, and have had sidis (and knee pain) for years, thought it was just my chondromalacia. I recently bought the Sidis and the Specialized shoes at the same time(I outgrew my old Sidis and needed 2 pair of shoes for a tour from Oregon to Wyoming coming up in June, in case my shoes break while we are riding through the boondocks) The LBS does a great job placing the cleats checking while you ride on a conputrainer, checking where the shoe hits your foot inside, etc. The Specialized shoes just hold my foot in a really good alignment which feels good and noticeably better all the way through my pedaling stroke.(my coach says Specialized has a built-in "varus wedge" which may be what makes these shoes feel so different) I noticed it right away the first time I took them on a ride. However, the Sidis are just nicer shoes. So when I get back from my trip, I may look into shimming them, or post them for sale again! Thanks again for all the info and the Sidi sizing chart! Tokie
You can buy a varus wedge for about $2 at a good shoe store.
Take the insole out of your shoe. The backing of the wedge peels off, and you stick it butted up to the inside edge in the toe-box directly to the shoe. (wide part against the big-toe side, tapering toward the 3rd toe.) Then put the insole back into the shoe.
Any shoe store that sells varus wedges should be able to tell you what thickness you need in your cycling shoes and will probably put them into your shoes for you if you ask.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson
Hey, you guys are such a great resource! I'll try the Varus wedge trick when I get back from my trip in July! Thanks so much! Tokie