Gaiam Sol Meditation Support Pillow (Ankle & Knee) MEDITATION KNEE PILLOW: Adds comfort and support to the knees or thighs while you meditate PILLOW CONFORMS TO BODY: Filled with buckwheat hulls, allowing the pillow to conform to your body and elevate your posture EASY-OPEN ZIPPERED COVER: Zippered opening allows you to add or remove filling for a customized comfort fit CARE INFO: Machine washable cover DIMENSIONS: 9"L x 5.5"W