Billabong Invert Boardshorts - Men's The Billabong Invert Boardshort is part of Billabong's Platinum Recycler Series, which includes boardshorts made from a unique process that turns plastic bottles into a stretch fabric. Through this program, Billabong has saved thousands of plastic bottles from ending up in landfills. 80% recycled polyester/20% spandex. 19" outseam. Imported.