What sizes do they come in? November 16, 2018 12:13 Updated Follow We offer the Fitted Sheet in UK sizes Single, Double, King and Super King. Related articles How deep is your mattress, will my sheets fit? How heavy are your Hybrid® mattresses and what sizes do you offer? How long does the Aloe Vera in the Fitted Sheet last? Can I choose a delivery time and date? Is there a thread count of the Fitted Sheet?