Poly-Fil Micro Beads are used in some of the most popular decorative pillows on the market today. Use them to create your own pillows and stuffed animals. This fill performs best when combined with stretchy polyester fabrics to create ultra-squishy pillows and crafts. One bag fills 1/2 cubic foot. Micro beads made of 100% mini virgin expanded polystyrene beads. Not recommended for children under 5 years old. Care: Do not wash. Place micro beads in a removable bladder so the outer shell may be washed.