Lil Planet Fitted Sheet The fitted sheet is made of soft cotton jersey and offers comfort during sleep; the sheets are available in pink, light blue, grey, and green. SUSTAINABILITY: Roba fitted sheets are produced according to OEKO TEXT STANDARD 100; we use sustainable and untreated materials for the production of our organic baby products. The sheet is made of 100% cotton and is machine washable at 40°C; it can be tumble dried; thanks to the special surface treatment and pre-washing, all Roba baby products remain super soft. The Roba fitted sheet made of 100% organic cotton jersey, gentle on the skin, is suitable for baby mattresses measuring 45 x 90 cm and 40 x 90 cm; colour: grey.