The soft, organic cotton sheet is specially designed to fit the travel cot mattress. The elastic edges ensure that the sheet lies flat and does not slide around. This also means that it’s easy to put on and take off. Machine washable. Features: The BabyBjorn Fitted Sheet for Travel Cot Light is a fitted sheet made from organic cotton The fabric is guaranteed free from hazardous substances and will not trigger allergies The sheet is tailored to fit the mattress and stays stretched and held in place by elastic bands Easy to take off and machine-wash Suitable from newborn to around 3 years