Boys swim trunks new/never worn/ didn’t come w/tag

Ordered for my husband & they ended up looking like they would fit my son, when they arrived. My big problem with them is that I don’t have a son. I can’t find my email receipt so I can’t send them back & I’m happy to pass them along to someone who’s kiddo could use them this summer. They say size L but I’m not familiar with boys sizes so I’ve included photos next to a measuring tape. The waist is obviously on elastic so it can stretch out quite a bit. Fully lined & a really nice color!.