Feature: 1. Improve Sitting Posture: This sitting posture corrector is for students to correct their sitting posture, their eyes and spine, and allow them to grow healthily. 2. Easy to install and use: just attach the base to the table, and then adjust the height of the corrector according to the child's height. The adjustable height range is 5.9 to 8.3 inches. 3. Avoid Visual Impairment: Helps improve bone deformation caused by improper sitting posture, prevent visual impairment, and also cultivate good sitting habits. 4. Full viewing angle: no blocking of the line of sight, keeps your child in a good sitting position without constant reminders, the view and contributes to the normal development of the spine. 5. Exquisite workmanship: attention to detail, finely polished button, non-slip bottom, adopts soft silicone material, skin-friendly, comfortable to use. Specification: Item Type: Posture Corrector Material: PP+ABS+Silicone Adjustable Height Range: Approx. 15-21cm/5.9-8.3inch Can be attached to the table Package List: 1 x corrector 1 x Base Note: Please allow slight errors due to manual measurement. Thank you for your understanding. Mejore la postura al sentarse: este corrector de postura al sentarse es para que los estudiantes corrijan su postura al sentarse, protejan sus ojos y su columna vertebral y les permita crecimiento saludable. Ángulo de visión completo: sin bloquear la línea de visión, mantiene a su hijo en una buena posición sentada sin recordatorios constantes, protege la vista y contribuye al desarrollo normal de la columna. Evite la discapacidad visual: ayuda a mejorar la deformación ósea causada por una postura sentada inadecuada, evita la discapacidad visual y cultiva buenos hábitos al sentarse. Mano de obra exquisita: atención al detalle, botón finamente pulido, fondo antideslizante, adopta material de silicona suave,EASY TO INSTALL AND USE: Simply attach the base to the table, then adjust the height of the corrector according to the child's height. The adjustable height range is 5.9 to 8.3 inches. Exquisite workmanship: attention to detail, finely polished button, non-slip bottom, adopts soft silicone material, skin-friendly, comfortable to use. Avoid Visual Impairment: Helps improve bone deformation caused by improper sitting posture, avoid visual impairment and cultivate good sitting habits. Full Viewing Angle: No blocking of the line of sight, keeps your child in a good sitting position without constant reminders, the view and contributes to the normal development of the spine. Improve Sitting Posture: This sitting posture corrector is for students to correct their sitting posture, their eyes and spine, and allow them growth.