Nightwear in your own size or one up

Short answer: Choose your normal size in styles with stretch and one up in styles without. Freedom of movement comes from the cut, not from surplus fabric.

Why many people buy too big

Nightwear should feel free, so many people reach for a size up. That gives more fabric to wrap around the body when you turn. The result is worse sleep rather than better.

What to look for instead

A cut with room at shoulder and hip and a fabric with a little stretch gives freedom without extra fabric. A cuff at the ankle keeps the trouser in place. See bamboo nightwear for women.

When one size up is right

If the fabric is woven rather than knitted, or has no stretch at all, then a size up is correct. That applies to pyjamas in shirting fabric. See bamboo pyjamas for men.

The body changes size overnight

The body expands slightly during sleep, and the stomach takes up more room after dinner. A soft waistband without tight elastic solves that better than a larger size. See bamboo nightwear for men.

Frequently asked questions

Is a size up warmer

No, often cooler, because air can circulate. But it twists more.

What about nightdresses

They twist most of all nightwear. Choose a closer fitting style or choose trousers instead.

Does nightwear shrink more than other clothes

No, but it is often washed hotter, so the shrinkage shows more.