Knee-Shoulder 10 x 20 Moist Heat Hot Pack * Thermal-Packs contain a filling that evenly distributes and retains heat for up to 30 minutes * Heavy-duty nylon thread keeps them durable; 100 percent cotton makes them comfortable * Appropriate for: Podiatry Hand Therapy Athletic Trainer Physical Therapy Occupational Therapy Chiropractic Spa Home Consumer Long Term Care