This general medical device provides 8-hour relief from lower back pain and stiff shoulders. It's the perfect product for this time of year. Especially those suffering from lower back pain and stiff shoulders should definitely buy it. - Product Name: General Medical Device Sleep-Time Heat Patch for Clothing - Quantity: 7 patches - Effects: Relief from lower back pain and stiff shoulders - Duration: Lasts for 8 hours - Made in Japan Thank you for viewing.