Bauer Vapor X900 Youth Ice Hockey Skates - Size 12.5 D Youth - D - Wide - Canadian 12.5 Y - 19.9cm Shoe size: USA 13.5Y - EU 31.5 - UK 13.0Y Our first glimpse at the OD1N Technology comes into play with the Vapor 1X and X900 boot models. The boot itself not only features a tweaked X-Rib molding pattern, but it also features an Aluminized Curv Composite that, because of the aluminum layer, is now the lightest boot Bauer has offered! The X-Rib pattern has always been designed to maximize support and stability and has now been tweaked to better lock your heel and ankle in place . Improved heel and ankle lock allow you to turn even tighter and crossover quicker for better acceleration. One of the bigger changes from last year's Vapor line is the new LS4 steel which is taking the place of LS Fusion steel. LS4 Runners come stock with the same familiar radius found on LS2 and LS Fusion, but with 3 mm of additional height. Feedback from their Pro athletes saying that elite-level players are looking for a taller, higher quality steel that will hold an edge better and provide a greater attack angle spurred this switch. The added height also improves the longevity of the runner and allows players to customize the profile without significantly diminishing the sharpening life. LS4 was designed to fit all those parameters