We recommend the usual protocol before wearing:
• Cold soak for about 30-40mn, with occasional hand agitation.
• Spin dry and line dry.
• Wear briefly before fully-dry to set creases, then hang until fully dry.
I opted for a W32 in the Swabbies, for a fitted top block, comfortable thighs and period bell-bottoms. The waist might feel a bit tight after the cold soak, but with a bit of wear, the “snow” denim stretches back slightly to the tagged waist.