BW SPORT Size 8 black unisex board shorts fake black jean look

Cool black swim board trunks or swim trunks made by BW SPORT size 8 unisex. They are super comfy i fojnd them at a thrift boutique in cali. They just dont fit me correctly:/ they are alittle big on me. I am size small or medium in pants for a reference. I would say these are medium/large in womens . And small or medium in mens. There is a small white chalky stain that i pointed to