This is the cordless leg massager that improves circulation in your leg while traveling. The device wraps around a calf and inflates and deflates automatically (facilitating the expansion and contraction of calf muscles) to prevent swelling and facilitate blood flow that's typically restricted during long flights or road trips. The device adjusts to provide customized pressure between 160 mmHg to 320 mmHg and it can be set to cycle through three different compression levels during a 15-minute program. The massager also soothes tight leg muscles that may become sore during long periods of immobility. Made from flexible PVC and nylon, the cordless massager wraps comfortably around a leg and can be worn easily underneath a pant leg without restricting movement. Fits up to 20" circumference calf. Requires two AA batteries. 21" L x 8 1/2"