The Arc ST Pro Splitboard Bindings carry the same touring system as the standard Arc ST, but swap in a carbon-reinforced nylon highback tuned for medium flex and custom 7075-T6 aluminum hardware that cuts 65% of the weight of the stainless steel it replaces. The ST Touring Bracket pairs aluminum with an overmolded thermoplastic bushing that outlasts the older brass version by four times, so the binding holds onto that lighter, more responsive feel through a full season of tours. What Our Gearhead(R) Experts Are Saying:"I noticed the weight drop on the skin track before I noticed anything else, my legs stayed fresher deep into a five-hour approach. Dropping into the line afterward, the highback held its flex through every turn without any of the give I've felt in heavier bindings."