Here are a pair of cool Vintage 1990's U.S. Polo Assn Bright Green Swim Trunks Retro , It does have the inside mesh and the draw string, The Sizing label states Size M - Modern Measurements are below - Waist is stretchy

These awesome shorts are vintage used item and is in great vintage used condition with little to no wear, there are no rips, tears, stains or smells. Draw strings are there and in great condition - material is 100% Polyester Lining 100% Nylon

Waist = 38 Fully stretched / 30 no stretch
Length = 23 inches