A convenient back pain treatment and preventive care for people of all agesSturdy and thick high-tech ABS plastic for long durability, Unique design according to the physiological curve of the human body's spine, better eliminate the source of back painMulti-level settings: 4 different stretching arch height levels, choose the right level for your body and exercise your back in a healthy wayStrongly help relieve chronic back pain and correct postural imbalances, restore the natural curvature and improve mobility of the shoulder and back musclesUse as daily traction therapy: thumb tip knots on the product surface like massage, stimulate the back points and promote blood circulation, simple and easy to install and use, light and portable to use when traveling, home or office < / li> Product descriptionsColor: Black and GreenEstablishmentSuitable for people of all ages who want to stretch their whole back, especially those who sit in front of the computer all day with little movementPlease read all descriptions carefully and the size chartAny questions, please feel free to contact usProduct Type: Back Extension SupportMaterial: ABS plastic and spongeColor blackHeight from the floor: Adjustable 6cm / 10cm / 12.5cm / 14cmMassage function: acupunctureWorking function:Lying on the back stretcher, gravity allows the front of the body to effortlessly stretch up and down. Then the surrounding muscles begin to relax, gently decompressing the vertebral discs, and realigning the spine, thereby relieving tension and painDirection:Comes in separate parts. Assembly requiredPlease start stretching slowly to prevent the muscles from sore too muchIf you feel uncomfortable, please stop and consult your doctorPackage include:1 x back extensor