This listing is for one sheet set for Twin X-long size beds.   This set is genuine The Big One bedding.   It is new in manufacturer's packaging and has never been used

Details include:

• Fits twin size mattresses measuring 39 x 81 (99 x 206 cm) and up to 16 inches (41 cm) deep
• One flat sheet -- 70 x 102 inches (178 x 259 cm)
• One fitted sheet -- 39 x 81 (99 x 206 cm) and up to 16 inches (41 cm) deep
• One pillowcase -- 21 x 30 inches (53 x 76 cm)
• Color:  Ivory
  
• 60% Soft Pima Cotton, 40% polyester weave
• Long wear, durability and no-iron
  
• Machine Wash 
• Very Nice!