this happend a few years back in a hotel´s swimming pool,

I lost my goggles in the pool because i had them too big and they fell off, i found the exact same goggles (my name on them) on another kid´s head, i tried to give him another pair in exchange  he declined. Later on he broke them (fixable) and threw them on his sun lounge , i spoke with my mom and asked her if it was ok if i took them back, she said it was fine so i took them . I felt bad for just simply taking them without asking for permission so AITA?