35-38 waist (get a belt or watch youtube and whip out a sewing machine)
Machine wash cold + inside out. Air dry. If designs become loose or have ill mannered surfaces you may carefully use an iron to tap press the designs back to former glory. Do not hold iron down onto designs for more than 3 seconds. Do not slide iron over design Surface.
Wash as little as possible for best long term results.
These garments should be treated like prized possessions not regular clothes.