The Wilderness Systems Adjustable Seat Strap is a replacement strap for the Phase 3 AirPro seats. The set includes seatback strap and a 1.5 yard strap of 1 in black webbing.
One of the buckle straps broke on my wife's Tarpon, and the rest were looking ragged, so I ordered this kit. I don't know what the deal was, but the long plain strap that threads through the seat back was only about a foot long, instead of the needed three feet. Had to use part of a ratchet strap to finish the refit. The buckle straps were spot on, though.