Here are a pair of cool Vintage 1980's Lands End Swim Trunks Blue Yellow & White Stripe Retro, It does have the inside mesh and the draw string, The Sizing label states Size L - Modern Measurements are below - waist is elastic

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% Cotton and is made in Tiwan

Measurements are

Waist = 40 stretched at its limit and 32 not stretched at all
Length = 15 inches