Backrest Pillow NSSI What kind of batteries do

What kind of batteries do I need to buy to power this product

A hot or cold elbow ice pack that securely wraps around and contours to the shape of your elbow

Can I adjust the height of the seat

warehouse workers

Designed to stabilize the arm and wrist with moderate support for common injuries

Backrest Pillow NSSI What kind of batteries doCOMFORTABLE BACKREST SUPPORT: Perfect for relaxing, reading, and resting, the Xtra Comfort backrest pillow provides cushioning back support that gently contours to the body for exceptional comfort. Featuring a removable bolster cushion, the repositionable cushion can be used for additional support for the head, neck, and legs. The backrest pillow also includes generously sized armrests to provide comfortable forearm support. PREMIUM FOAM CUSHIONING: