Cool black swim shorts for teen boys by British brand Stella McCartney Kids, patterned with colourful palm trees and white good vibes slogan prints. With slanted front pockets and a velcro-fastening back pocket with eyelet holes, they are made in silky, recycled fabric with a comfort soft mesh lining. There is a blue drawstring cord on the elasticated waistband for an adjustable fit. The Stella McCartney fit can be quite small so choose a size up if you want room to grow.