Comfortable and durable. New and high quality. Features built-in layered perforation for good air permeability. Provides support, compression, and warmth to aid in recovery. Suitable for mountaineering, running, cross-country, and other sports training activities. Ideal for reducing lumbar fatigue and discomfort associated with injury, arthritis, or back strain. Breathable mesh surface with soft material and strong flexibility. Includes far infrared heating technology. Magnetic inserts measure 1.5 cm in diameter and 0.5 cm in height. Size guide: Small (S) fits waist 1'8" – 2'4", Medium (M) fits waist 2'5" – 2'7", Large (L) fits waist 2'8" – 3'1", Extra Large (XL) fits waist 3'2" and above. Applicable for health support, fitness, and general use. Product category: Sports. Color: Yellow. Applicable area: Waist. Heating mode: Far infrared heating. Package includes: 1 x Protection belt. Note: 1-2 cm measurement deviation may occur due to manual measurement. Color may vary slightly due to different monitor settings. We strive to provide the best product and service. If you have any questions, please and we will assist you promptly.