Sleep product buying guides

Four ways to measure your sleep, all of them estimates, each suited to a different person. This guide picks by what you will actually wear and what you want to know.

A screen on the wrist at 3 a.m. is the reason many people stop tracking. These three measure without one.

The right product depends on the noise: sudden sounds want masking, constant sounds want blocking, and a snorer may want both.

Away from home the bedroom is not yours. These are the products that carry the familiar parts with you.

The pillow is the side sleeper's mask problem: deep cups press in, flat masks slide. These four handle it differently.

Darkness is one of the few sleep problems with a complete fix. This guide starts with the free ones and ends with what to pair a dark room with so mornings do not suffer.

A side sleeper has a shoulder-wide gap to fill and most pillows are made for a smaller one. The picks here either let you set the height or start tall.

Overheating has several cheap fixes before the expensive one. This guide orders them.

A bedroom purifier is judged on two numbers: how quiet it is on low, and how many times it can clean your room's air per hour. Marketing quotes a third number that does not matter.

A dry bedroom shows up as a scratchy throat and a blocked nose in winter. The right humidifier is one that knows when to stop and one you will actually clean.

A bedside clock earns its place by getting the phone out of the bedroom. Light before the alarm is the bonus, and only one of these tells you how bright it is.

Some people settle under steady pressure; the research is small and mixed. This guide treats weight as a preference to test, and picks by how well each product delivers it.