• The self-heating wristband relieves pain and protects wrists during training. • Promotes blood circulation and relieves physical fatigue. • Made of high-quality polyester, it is comfortable, breathable, and adjustable. • Suitable for sports like basketball, volleyball, cycling, and daily activities like work and driving. • Supports sprains, tendonitis, carpal tunnel arthritis, and relieves pain. • Easy to use: pass the thumb through the opening and adjust the support strap. • Do not wash in hot water, do not expose to the sun, do not mix with other garments.