Dual density 3D formed tongue for comfort * Boa� Focus lacing system offers upper and lower zone independent tightening, even tightening with lo * Boa� Conda� liner system: allows you to tighten or loosen your liner on-the-fly from outside the boo * Boot Flex: 9 (1 being softest � 10 being firmest) * 100% Urethane Endo structure