Navy blue Nike swim trunks, size M

I found a pair of navy blue Nike swim trunks this afternoon around 2:45pm behind the KU Memorial Stadium parking lot on 6th Street in Lawrence. They're size M, quick-dry fabric, with a white drawstring and a bright red Nike Swoosh on the left leg. Inside the waistband there's a small blue silicone keyring with a 'KU' insignia, and there's a faint chlorine stain near the hem plus a tiny orange squiggle mark on the right pocket—two unique features that could help identify them. They look recently used but in good shape otherwise. If these might be yours, I'm happy to get them back to you.