My son has the Travelander Swagit swag, fantastic swag but after breaking 4 sets of end hoops for no apparent reason I ended up buying 12 mm tube from Bunnings, filling with sand, bending to shape around the spare wheel..... no more broken hoops.
The sand stops the tube from creasing when bending.
Friends have the ARB swag, same issues. Great swag, hoops break.
We bought a different brand swag for my daughter, similar concept, same broken hoops. The hoop material used is simply not up to the task.
The 12 mm tube from Bunnings was a cheap fix that has worked really well.