evo.com | Full Tilt Ski Boot Parts > The Full Tilt Evolution Flex 6 Boot Tongue is a replacement tongue for your Evolution (FTE) shell Full Tilt boots. A medium flex offers maximum versatility & reliability in all conditions with a smooth, natural ankle motion to help eliminate shinbang. Compatible with Full Tilt Evolution (FTE) Shell Boots Only B&E, Descendant, Plush 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! Sold as a pair (2 tongues) X-Small 23.5 Small 24.5 - 25.5 | Full Tilt Evolution Flex 6 Boot Tongue - X-Small in Black