For running/walking shoes, I wear anywhere between sizes 6 and 7, depending on the manufacturer. I have wide feet, so fitting a shoe can be a bit difficult for me when buying online. I ordered a size 6.5, but they were too small. Amazon promptly sent the size 7 exchange pair. These fit great, plenty of room in the toe box, but narrower in the heel than other shoes that I have. I liked the narrower heel as I felt that it added more stability, compensating for the roominess in the toe box. Also, the thick tongue allows me to tighten the laces without feeling them digging into the top of the foot.

I am using these shoes as an alternative to hiking boots for a trip to Peru (lots of walking and climbing in mountainous areas). They are lightweight and very comfortable, perfect for my trip. Almost. Today I noticed a separation between the sole and the upper of the left shoe, almost an inch long, where the shoe flexes for the toes. It looks like it is becoming unglued, and I am afraid that it will continue to separate. I've worn these shoes for only two weeks, so this is not normal wear and tear, but rather a defect in the shoe. I hope this is just a fluke and not indicative of the quality from Montrail. Since I like these shoes so much I would rather exchange for another pair than get a refund. I did an online chat with customer service, and they said they would send me an e-mail regarding the return. Keeping my fingers crossed that I actually get the e-mail and will quickly exchange for the perfect shoes!

UPDATE: Changed my rating from a 3* to 5*. The e-mail response left me with more questions than answers, so I talked to a phone rep. She did a great job explaining that I could return the defective shoes, but had to place a new order for another pair as I already did an exchange on the product. I promptly received the new order, and the shoes look great so far!