Wrap with WarmthThe Venom Back focuses heat and vibration on your core. Since almost all athletic movement involves your core, the Venom Back is ideal for easing overall muscle soreness and stiffness in the body. Digital touch screen control Nano-technology heat with 3 adjustable temperature levels: 130°F (55°C) / 145°F (63°C) / 160°F (72°C) 4 vibration pods with variable sequences 18 V rechargeable lithium-ion battery Premium Plush™ neoprene wrap TSA approved for carry-on