Three hundred, in single-ply long-staple organic cotton sateen. That is near the top of what a square inch of cotton will hold before the yarn has to be thinned to fit. Counts advertised far above 300 usually come from multi-ply yarn counted more than once, which produces a heavier, less breathable cloth rather than a finer one.

No, and deliberately. The color is the cotton's own, a warm natural off-white, because the cloth is not bleached and carries no optical brighteners. Next to conventional bright-white bedding it reads as cream.

With a zipper running along one side, so the insert goes in and the cover comes off for washing without fighting a row of buttons.

Yes. Most covers pair a presentable face fabric with a cheaper backing, which means the side against your skin all night is the side the label never mentions. Ours is one cloth, front and reverse.

No. They slip on, with no zipper, no buttons and no placket, so nothing hard sits in the space where your face goes. The open end is a plain hem, turned once and topstitched.

Fifteen inches, which clears a deep mattress or a standard one with a topper on it. Most fitted sheets are cut for a bare mattress and then fight you at the corners once you add anything on top.

A fitted sheet, a flat sheet and two pillowcases. Twin ships with one case, since a twin bed takes one pillow.

Cold wash on a gentle cycle, tumble dry low, and line dry if you can. Skip fabric softener and dryer sheets, which work by leaving a waxy coating on the fibers and will dull the sateen over time. Skip chlorine bleach too. Expect a little shrinkage on the first wash, which is normal for unresined cotton and already allowed for in the cut.

Yes. Wrinkle-free bedding is almost always finished with a resin, and the resin in question is usually formaldehyde-based, which is exactly the category the Global Organic Textile Standard exists to rule out. Pure cotton creases and breathes.

Cut and sewn by hand in New Jersey, at the workshop that has made our pillows and duvets since 1981. The sateen itself is woven from GOTS certified organic cotton and imported.