Product parameterProduct name: summer 3 support breathable waist protectorProduct material: polyester fiberProduct size: M: Applicable belly circumference 76-90cm, waist belt length: 95cm L: Applicable belly circumference 91-100cm, waist belt length: 105cm XL: Suitable for belly circumference 101-115cm, waist belt length: 115cmProduct weight: 550gPacking size: 21*21*6cmFeatures1. Simulate the curvature of the human lumbar spine, reverse the C-direction support, restore the normal lumbar spine curvature, and relieve lumbar discomfort;2. Support to correct the waist posture, soft and hard dual support, dual assistance;3. Mesh fabric, cool and breathable, suitable for office white-collar workers and hot and humid climate areas;4. Aluminum alloy strip 3mm thick, steel support system, caters to the spine groove, fits the slight inclination of the back bone, and naturally transitions, adapts to the slope-shaped support to support the pelvis;5.3 Supporting plates and two trapezoidal support on the outside to disperse the force of the psoas muscle;6. Double compression fixed support, 360 elastic support to avoid bending damage;Product ListOPP bag: waist belt + 3 support plates (1 wide + 2 narrow) + 3 replacement gaskets