Having problems with your leash getting twisted? Then you need an F-One leash swivel. It fits by looping your leash at the fixed ring end and then releasing the U-shackle end (cross head screw) and fitting it to the wing attachment loop. No more twisting issues after that!

Marine Grade Stainless Steel Swivel - Neoprene cover (make sure the 'swivel' is proud/clear of the cover when installing