Fitted sheets are not popular as there is a huge variety of bed sizes. Usually they are +20 or +25 cm to cover a mattress. Flat sheet size is also may vary depending on vendor. Sleeping pillows covers are usually 50 × 70 cm, 60 × 60 or 70 × 70 cm. "Euro" prefix is refereed to Western Europe but actually the measurements doesn't match ones for the European countries.