From Psycho Bunny, these swim trunks feature:

• Solid hydrochromic fabrication: reveals a bunny pattern when wet
• Fully elastic waistband with drawstring
• 2 x side hand pockets
• 1 x back pocket with waterproof bag
• Inside mesh lining
• Polyester mechanical stretch
• Inside net of polyamide/elastane
• Machine wash/tumble dry