Wing Wave Board Leash from Forward WIP in their Rider4Rider product line.
French made elastic waved webbing 10mm wide, super light and soft with high stretch capacity for shot confortable connection to the wing board.
A double elastic section will dampen heavy crash and protect the board insert.
Connection to Wing belt or Wing Neo Flow PFD vest with a stainless carabiner.
Length 140cm to 260cm stretched.