Read more Full Custom T3 Liner For improved precision and performance, these liners are fully customizable to mold perfectly to the shape of the foot. The internal padding, exterior upper and tongue are all customizable. Dual Core Technology Structure The DUAL CORE technology works in synergy with the Generative Design Grid. It makes it possible to reduce weight while retaining rigidity. This is essential to ensure a high level of skiability. 100mm Anatomic Last To ensure maximum performance, shells must be chosen to fit as closely to the foot as possible. This is why the ALLSPEED range offers 3 internal lasts based on the same construction, designed to fit as closely as possible to the foot with perfect anatomical wrap. 3M Thinsulate Insulation This very thin fiber is used mainly in clothing thanks to its elasticity which supports freedom of movement. In a liner, it works ideally with the other materials to provide perfect foot support for great suitability. Liner Tech Last Insulation (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { // register javascript with unique module id P.when("jQuery", "AplusModules-module-6", "ready").execute(function($, hoverModule) { hoverModule("aplus-module-6-4"); }); }));