This storage bin is made of Cationic , which is a polymer of oxford and flax, so it has these advantages of both: breathable, strong and durable, long service life, perfect for making storage box.This underbed storage case fits perfectly under your bed. And ideal for storing clothes, comforters, blankets, off season duvets, beddings, pillows, garments, sweaters, and so on. Keep your closet tidy and clean. They are Foldable when not in use,Stackable when filled with comforters,blankets,etc. Save space,perfect for small spaces in home, college dorm, bedroom, basement, attic, or more.