Two Whatever Cushions under a knee while sitting on a zabuton can help relieve knee strain.
This teeny, tiny pillow can cushion a sore ankle or knee, prop droopy wrists, serve as a zabuton (pron. zah'-bu-ton) under a small statue or - whatever. It is well constructed with an inner muslin cushion stuffed with cotton batting and a washable zippered cover. 7.5" 7.5"x 1".