He can comfortably build sandcastles and splash in the pool with these swim trunks, thanks to their elasticised waist and mesh boxers.

• Shell and boxers: polyester.
• Machine washable.
• Size M has a 19.7 cm rise and measures 24.1 cm inside leg.
• Signature embroidered Big Pony at the left hem.
• Banded waistband. Elasticised at the back of the waist. Hook-and-loop fly with a lace-up closure.
• Side on-seam pockets. Back right patch pocket with a metal drainage grommet.
• Woven "Polo Ralph Lauren Swimwear" label with a palm tree graphic at the centre back waist.
• Mesh boxers with a key pocket.