Flux has 2 Urethane bindings and the Flux SR15 is the high end version of the Flux RK30 binding. Both are flexy and very reliable but the SR15 has newer/better tech. The baseplate is their newest design and works better than the older when it comes for allowing softer boards to flex under foot. It’s also lighter than the RK30. This Urethane based high back is like the description said. It’s a binding for people who like to jib everything. This Urethane high back is incredibly soft and not for everyone. It’s very rubbery and very easy to bend. The 2012 has stiffened up to make it a little more responsive and more do everything freestyle friendly than the 2011. It’s well made, incredibly comfortable and very easy to adjust because it’s almost tooless. Our one complaint like with all Flux bindings is we’d like to see more of the base plate removed, especially around the heel, to provide more shock absorption. Still there is good shock absorption and Flux made some improvements this year with EVA foam across the whole base.