The Inlight Boot 122 Red and Near-Infrared PLT Pad has many applications. This pad is designed to fold over the entire foot like a “boot,” or extend lengthwise along the calf or shin. Neoprene flexibility for ease of application anywhere on the body and on the foot. Comfortably secured by a Velcro strap Inlight Therapy PLT Therapy Pads are interchangeable between all Inlight controllers 122 diodes of the polychromatic blend of red and infrared photon energy 52 Red diodes (630 nm) 70 NIR diodes (850 nm) Controller required and sold separately Illumination Area: 479 cm2 Output Density: 11 mW/cm2/second Joules per cm2 per 20 minutes session: 13.3 InLight Product Warranty Details Order Cancellation: InLight Therapy Products are considered Class 2 Medical Devices. Once used, they are not eligible for return or refund of purchase except due to manufacturer defect. You may CANCEL this transaction, without any penalty or obligation, within THREE BUSINESS DAYS after the date of purchase - as long as product has not been used.