Material:Breathable Fabric, MagnetsModel Number:Tourmaline Self Heating Protector beltEffect:Bone CareItem Type:Braces & SupportsApplication:BackFeature:tourmaline magnetic beltFeature1:tourmaline self heating magneticFeature2:adjustable tourmaline self heating magnetic beltFeature3:Back SupportHightlight:Built-in 56/102pcs magnetsColor:BlackSize:M/L/XLFeature4:Waist Brace Support Posture CorrectorFeature5:Back Shoulder Lumbar Posture Correction56pcs MagnetsTourmaline Self-heating Magnetic Therapy Waist Back Shoulder Posture Corrector Spine Lumbar Brace Back Support Belt Pain ReliefFeatures1.Adopt breathable and soft fabric, comfortable and skin-friendly for all season long time wear, will not cause any irritation to your skin.2.Built-in 62pcs magnets will release heat quickly with long lasting heating effect, effectively helping improve micro circulation and promote blood circulation to relax muscle fatigue and relieve the pain associated with joint and back problems.3.Adjustable hook and loop type fastener straps, fast to release or close and free to adjust the tightness, Package Included:1* Tourmaline Back Support Waist Brace1* Tourmaline Neck Brace