When mere seconds are needed to be on the podium, the Alpina Elite 3.0 Skate boot is the competitor&';s advantage. Exceedingly light, stiff, and yet supremely comfortable. Lighter than the ESK 2.0, the technical improvements also include a waterproof and breathable fabric on the upper. And keeping your feet comfortable is important, especially because you know you&';re going to sweat. Once piece all carbon chassis integrates the heel and sole into an anatomical design Active Edge technology takes the bite out of the all-carbon heel area Full carbon cuff and heel is very light and provides excellent stability 4Dry upper fabric is waterproof yet ventilates well 45 degree lacing system improves torsional stability of the soft part of the shoe Compatible with any binding using the NNN interface Alpina Race Boot Size Chart