The beach shirt is based on a loose-fitted baseball shirt we found from the early 60s. We adapted some details and have limited runs in various fabrics.
The lightweight, funky Spandex we use is old stock and suits the fit very well. Big chest pocket on the left-hand side. Size S runs like an S/M and the M as an M/L as a reference.
Our model in the first picture is 182cm and wears a Small.