Begin with the hand-feel
Modal, cotton-rich cloth and low-lustre satin blends should feel smooth without trapping excessive heat. Run a hand across seams and piping to check that nothing feels rough against the skin.
Choose enough ease
Nightwear should allow the shoulder, waist, hip and knee to move freely without becoming so oversized that fabric twists during sleep. Sit, stretch and walk before deciding.
Check opacity and care
Hold the fabric against light, inspect the button placket and read care instructions. A useful nightwear set should retain softness and shape through regular washing.
Consider the complete evening ritual
A calm colour, a soft matching set and a preferred candle or bathing fragrance can make the transition from day to rest feel more intentional.