Njoy Paper Straws 12mm Compostable 250pcs The Njoy Paper Straws 12mm Compostable 250pcs are made of paper and are biodegradable. The straws have a black colour with the 'Njoy' brand logo on them. You can combine the straws well with the Njoy Shake cups. The straw can be used in drinks, but is also ideal for summer milkshakes. The pack contains 250 pieces, in which there are straws with a thickness of 12 mm.