To explain a little bit of these yoga bolsters features – we would like to describe it like this: This bolsters are very light yoga bolsters filled with 30% elastic recycled polyester fiber. Soft, plush, absorbent eQua micro-fiber fabric cover keeps the bolster dry and comfortable. Hidden zipper construction for a smooth, seamless finish. Cover is removable for easy cleaning. To Wash: Remove outer microfiber cover from inner pillow. Machine wash on cold with like colors. Hang or tumble dry on low. Tumble dry on low recommended. Do not use dryer sheets or scented detergents. Convenient, sturdy, easy-carry handle with faux-suede logo detail. Suitable for Yin Yoga, Restorative Yoga and other yoga or treatments. Easy to carry and bring to class.