Package content: 4 pieces in total. duvet cover 200x220 cm elastic bed sheet 160x200 + 30 gray color (30 cm edge height.) the rubber used in our bed sheet is guaranteed not to burst or break. it is made of akfil fabric. akfil fabrics absorb moisture and do not sweat. thanks to its air permeability, akfil fabrics breathe and provide a quality sleep. this product is produced by b2b collection company as 100% domestic production. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.