Not every pick is sold in every country. These are the things that make the difference, so you can spot the finest in your own store.
Weave beats thread countPercale is cool and crisp, sateen smooth and warmer. Above about 400, thread count says little; the length of the cotton fibre matters more.
Long-staple cottonLook for long-staple, Egyptian (Giza) or Supima cotton. Short fibres pill and wear out sooner.
Pillow height before brandSide sleepers need a high, firm pillow, back sleepers medium, stomach sleepers low. Find yours. Sizes differ by countryA UK king is about a US queen, and European pillows are often 80 x 80 cm. Check the sizes. Masks: contour and strapMoulded cups and a wide adjustable strap block light without pressure.