DO NOT put EDEA Skates in an OVEN and heat the entire boot, as this would soften the entire structure and shape of the Boot. We strongly advise against this. We use Hair Dryers, Shoe Lasts and other special tools to Heat and Custom Shape the specific areas of the Structure of the Skating Boot that need to be modified. While this may not incredibly difficult, it does however require a good knowledge of Skating, the Boots and how a Skaters feet work inside of them. EDEA has created this Incredible and truly wonderful breakthrough for the Skating World, “INSTANT CUSTOM Skates”