Henry Cotton's Swimwear Fits Med/Large

New with tags, men's Henry Cotton's lux brand swim trunks for men. International size tag says XXL, but unstretched waistband is only 16.5 inches times 2 as pictured, or approximately 33 inches, so medium or small large? There is an elastic on the back of the waistband for a fitted feel/look. Be aware of waist size when purchasing. Snap waist with zipper, and brief liner. 2 front snap pockets and rear open pocket. 100% fast drying nylon. Boxer mare uomo, in military green.