About time I see water polo boys in skimpy ...

[Byron]

.....the speedo roll-up or roll-down factor can often be confusing in pics , eg the surf lifeboaters at Bondi and elsewhere who want their bum cheeks firmly gripping the seats for rowing.

(and thanks to PSD for brand info - the only dp I knew was an old chain of ladies' fashion shops called Dorothy Perkins)(and remarkably similar)