Lightweight , comfortable and meets army regulation. 2mm drop compliments minimalist Training/lifestyles. I was under the impression that the size you wear with your running shoes would be the right size with these boots. The fit is dead on with normal socks under normal use. With padded socks or swelling under heavy prolonged use I could see this being a problem. Also the ankle was real snugaround the achilles tendon, with some light abrasion initially. Will update this review after 30 days wear/break in period.