The shoes themselves are heat moldable. They're placed in a shimano oven then placed on your feet. A vacuum bag is placed over the shoes causing the shoes to mold to the exact shape of your foot. The vacuum unit is also a shimano product so a shimano dealer with the oven needs to do the shoe molding if it's needed. I haven't done any heat molding as the shoes feel comfortable as is but that being said I've only been on the trainer as of yet. I will say these are the most comfortable shoes I've ever used to this point but it's still early. I did go with the wide version in size 44. The standard width fit well but I like a little extra in the toe box, just a personal preference. And when trying on shoes remember your feet are going to expand when riding especially in the heat. If they feel perfect in the store you might want to size up a half size. The best cycling shoes are the ones you never think about.
One of the differences with the R320 is that it has a silicon anti-slip heel-gripping liner while the 260 uses a standard cloth heel liner but I can't detect any slipping at all. Heel retention is excellent. Both shoes utilize the new +11mm longer cleat-adjustment range that allows more optimum foot, pedal, and shoe area of adjustment. Nice feature as I do run my cleats back a little further which takes pressure off the Achilles and calf muscle and places a higher level on the quadriceps. The R260's use Shimano’s new offset strap system that's designed to eliminate pressure points at the highest point of your foot where pressure tends to be the highest. Non-offset straps will sometimes ‘pinch’ the top of the foot which restricts the blood flow to the forefoot and pinches the nerves at the top of the foot. The Shimano offset straps cinch-down to the left and right of this sensitive area. The cooling vents are massive, the front vents look like air intakes on a jet aircraft. There is also plenty of vented material included in various parts of the shoe so if you use these in colder weather you'll really need shoe covers.
Both shoes have full carbon soles and the R260's are approx $80 less than the R320's. They weigh in at (size 40 per shimano website) 496 grams for the R260's and 470 for the R320's. Right now the shoes feel great but I’ll post an update after I put them through boot camp.
|Good looking shoes and from my count 6 adjustable features, plus |
you can heat mold the shoes and soles up to 3 times.
|Arch inserts slip into a pocket or you can leave them out.|
Yellow is mid and red is for a high arch.
Sole is heat moldable also.
|Air intakes are monsterous|
|Full carbon sole. You have an additional 11 mm of cleat |
adjustment if you need it. Great feature.
|To loosen the ratchet just press the black tab|
|The optional Metatarsal pad sticks on.|