Beat, in my opinion, blows any American series of recent merit out of the water! Others ,especially Keene which are very similar, tend to give way through the middle causing pressure toward the middle or side of the foot. Im short, 52" and 140 lbs. The size 11 is a good fit. I can run on colder days with my wireless headband. The fix is to attach a chain extension to the necklace closure which I plan to do. The silicone is not super grippy, it is smooth. Thank goodness my space heater wasnt on at the time! It seemed like this product would help me make use of a small cabinet near my sink and organize my spices but it requires drilling into the cabinet shelf with a drill and I cant fit a drill in this space with a shelf in the way. I always wear socks with them and still wore through.