Carlos' first USD boot is solid and slick! It's based on the USD Carbon Free boot but with a definite steezy sneaker style. Enough firmness for support and to respond quickly and directly to your foot twitches but flexible enough for comfort and your foot contortions. Both the cuff strap and the 45 strap are velcroed webbing for durability but still replaceable. A great soul plate with a center groove allowing a couple more millimeters of wheel diameter allowance to most frames.