Purchased size 42; 58 yr, zwifter 250-400 mi/wk, I wear Size 8 wide(24 cm), comparing to specialized audax 42 wide; I purchased bc I was looking for a better breathing shoe. Pros: plenty of mesh for breathability, roomy toe box, comfortable padding around heel, true shimano sizing Cons: soft sole, cross strap does not allow for specified area tightening....I was hoping to find the same benefits of my audax but just better breathability. The better breathability does not outweigh the lack of stiffness and adjustability. I would not buy again.
One less barrier to ride inside. I use Shimano road and mountain shoes for training and racing. The fit aligns perfectly with my other cycling footwear, even though I dont use socks with these ic100s. I've put these through four hard sessions on my road racing bike on rollers using Shimano's SPD-SL(3 Bolt) system. I am not a footwear expert, but these make my life easier here in the Pacific Northwest. Wonderful to see Shimano recognize a need for a convenient piece of indoor equipment such as these.