For anyone covering a sofa: velvet, cut to shape, no tailoring needed.
The stretch panels pull the fabric into the corners instead of leaving it loose.
Cold machine wash. Skip the fabric softener, it flattens the pile.
There are 5 sizes in this reference.
Velvet catches the light differently depending on where you sit.
Ships flat. Check the size chart against your own sofa, not the label on it.
Available sizes: 1-seater (35-55 in / 90-140 cm), 2-seater (55-73 in / 140-185 cm), 3-seater (73-91 in / 185-230 cm), 4-seater (91-118 in / 230-300 cm), 2 cushion covers (18×18 in / 45×45 cm)

