Specification Brand : Jwthee BulletPoint1 : Anti Myopia T Shaped Writing Frame Vision Protector: The corrector can effectively correct writing sitting posture, prevent bone deformation caused by incorrect posture, and avoid damage to vision,and can also help students having a good sitting habits BulletPoint2 : Adjustable Sitting Posture Corrector: The height of the stand can be adjusted freely, adjustable height: 15cm/5.9in‑19cm/7.5in, allows you to find the height that suits yourself BulletPoint3 : T Shaped Reading Writing Posture Trainer Eyesight Protector: Kid Sitting Posture Corrector for Men and Women use T shaped arc shape, no angular, safer and more comfortable easy fit without restraint to chin. posture corrector for kids does not block the view of the desktop BulletPoint4 : Easy to Use: Professional students writing sitting posture support no need to install, just clip and use, no need to assemble, can be used with fixed table, suitable for most tables of different shapes and thicknesses BulletPoint5 : Nonslip Design: Reading Protector Frame use non slip silicone pad, protect the desktop, fine threaded workmanship, height adjustable student screen desk corrector feel comfortable to hold, not hurt your hands Color : #711 ItemName : Kids Desk Sitting Posture Corrector, Students Writing Sitting Posture Stand Height Adjustable Students Vision Writing Desk Posture Trainer ItemPackageDimensions_Height : 9 centimeters ItemPackageDimensions_Length : 21 centimeters ItemPackageDimensions_Width : 17 centimeters ItemTypeKeyword : lumbar-supports Manufacturer : Jwthee Material1 : Acrylonitrile Butadiene Styrene (ABS) Material2 : Silicone ModelName : Jwtheeu09fqb8562 ModelNumber : Jwtheeu09fqb8562 NumberOfItems : 1 PartNumber : Jwtheeu09fqb8562 ProductDescription : Item Type: Sitting Posture Corrector Material: ABS+Silicone Color: White Function: Can effectively correct children' sitting posture Size: Length: Approx. 16.3cm/6.4in Width: Approx. 21cm/8.3in (Manual Measurement, for reference only, thank you for your understanding)