TSL Snowshoes Symbioz Expert Snowshoe The TSL Symbioz Elite is the most technologically advanced snowshoe on the market; Designed for people 150-300 LBS The TSL Symbioz Expert features Hyper Flex technology allowing the frame to conform to any terrain and offer unlimited grip The precise toe adjustment binding system allows the user to customize the length in a matter of seconds The TSL Symbioz Expert features a ratcheting instep strap to insure a secure and comfortable fit As the symbioz flexes the Texalium inserts store the energy and return it at the end of the stride reducing muscle fatigue