It fit in the area I had. In my opinion, this new Rival 310 does not improve upon the earlier Rival 300. I put the bike on the ground. Just not a good choice. No breaking in required and goes with a bazillion outfits. So he likes them they are supportive, they slip on readily and they keep his feet warm. We returned it! If I could, I would give them 3 1/2 stars. Size: I studied its dimensions before I ordered it and used my tape measure to get an idea of size where Id be placing it, so I didn’t go into it thinking I was getting something bigger than I actually was. I want to say I used them on and off for at least six hours until I fell asleep with music playing.