evo.com | Full Tilt Ski Boot Parts > Available in 4 sizes, the Full Tilt Flex 6 Boot Tongue is a replacement tongue for your Original or Soul Shell Full Tilt boots. This tongue will also fit old Raichle Flexon boots and the current K2 FL3X Revolve Series. *Note: This part fits Full Tilt's ORIGINAL and SOUL shell boots as well as K2 FL3X Revolver/Revolver boots Small 22 - 25.5 Medium 26 - 27.5 Flex Rating: 6 (1 soft - 10 stiff) Medium flex delivers maximum versatility & reliability in all conditions with a smooth, natural ankle motion to eliminate shinbang! Fits 1 pair of boots (2 tongues) | Full Tilt Flex 6 Boot Tongue - Large in Black