Marco wanted to build a boot that had style strength and comfort but most of all a boot that would look smooth right out of the box. The MFM has a removable tongue to fine-tune the flex to anyone's style. A 50/50 Quadra sole makes for a perfect combination of stability and cushion plus bigger airbags for extra firm landings. Key Features of the Nitro MFM Snowboard Boots: QX 50/50 Sole Tech 3 Ultralight Thermacell Liner Standard Lacing Removable Power Shell Tongue ILS Liner Lacing Tech 3 Footbed EVA Molded Shell Tongue Flex Gusset