Comments: Got this shoe to complement my NB1260v3's. Like the light weight,ample cushioning,heel drop,color and fit of the shoes. I have "B" width feet, pronate moderately and run about 25-30 miles a week. These definitely run narrow for a "D" width. Heel fit is great-no slip! I also have a flat arch, but feel that these shoes give me good support on the medial side. Will probably use for shorter/tempo runs.
From: Mac, New Orleans, LA. 3/17/14
Comments: I've been a runner for over four decades, so I have a bit of experience with running shoes. Now that I run "midfoot style," I've had to select midfoot running shoes. So when the Vibram Five Fingers or the NB Minimus offer too LITTLE support, go up a bit to the N.B. 870...it's perfect! I used the N.B. 890 for a while and I like the 870 slightly more, probably because of the support for the mild pronator. I've done repeat miles in this shoe and it's just fine, although for speedwork, I prefer the awesome N.B. 1400. So yes, this is an endorsement.
From: Petrie, Ballston Spa, NY 12020. 3/10/14