【109 Magnets】Built-in 109pcs magnets and nano infrared thermal acupuncture dot matrix will release heat quickly with long lasting effect, effectively helping improve blood flow and promote blood circulation to relax muscle fatigue and relieve the pain associated with joint and back problems. 【Give Away 5 Lumbar Support Columns】Detachable 5pcs tough ABS shaping plates in solid construct will help distribute the pressure uniformly for your lumbar spine with strong fixation and reliable support to maintain a good posture and achieve some effects on body slimming. 【Giving an Independent Self-heating Neck Brace】Come with an independent neck brace which contains 5pcs self-heating magnets, free to choose whether wear it or not, the warm fabric can further enhance the neck care. 【High-quality Fabric】High quality breathable and soft fabric, comfortable and skin-friendly for all season long time wear, will not cause any irritation to your skin. 【Adjustable】Adjustable hook and loop type fastener straps, fast to release/close and adjust the tightness according to your demands, 3 size variations can widely suit most users with custom fit. XL: Suit for waist circumference 99-112cm (Suit for weight 72.5-90KG)