Tom David Lewis Donut Shape Squeeze Toy - Stress, Arthritis, Therapy. SOFT foam provides a safe child's toy for indoor play. THERAPIST of stress, arthritis and other nerve/muscle conditions. TOUGHNESS : They're soft enough to be comfortable and hard enough to be beneficial. EASY TO GRIP and squeeze which can be used at the office, home, school, gym, anywhere! SIZE : Measures approximately 3.5" diameter x 1"H, donut hole 1.25"W.