Performance boot offers the benefits of a 3-piece shell with a comfy fit 130 flex offers bomber support for heavier or experienced skiers IF Max Hike liner is heat-moldable for a customized fit 100-102mm last is suited for normal-to-wide shaped feet 4 micro-adjustable buckles let you dial-in your fit on the fly Integrated walk mode is great for the occasional bootpack The Panterra 130 GW Ski Boot is our top recommendation for skiers who want the performance of a Krypton boot, with a last that is specific to medium-to-high volume foot shapes. The 130 flex is designed to support larger or more aggressive skiers, whether shredding the park or sizing up big mountain lines. Rockered GripWalk soles and an integrated walk-mode come in handy for hiking parklines, bootpacking ridges, or hiking back to the car at the end of the day.