cushion sitting for a long time at work seat cushion office chair cushion window cushion student cushion hair pack 坐垫久坐上班屁垫办公椅垫飘窗垫学生垫子加厚垫

light blue color-square dark gray-square grape purple-square light gray-square wine red-square deep coffee-square denim blue-square beige-square beige-square grass green-square orange-square yellow-square black-square light pink-square sky blue-square light coffee-square

40x40 thick 3cm 40x40 thick 5cm 40x40 thick 8cm 40x40 thickness 10cm 45x45 thickness 3cm 45x45 thickness 5cm 45x45 thickness 8cm 45x45 thickness 10cm 50x50 thick 3cm 50x50 thick 5cm 50x50 thick 8cm 50x50 thickness 10cm 35*24 * 3cm 35*24 * 5cm 35*24 * 8cm 35*24 * 10cm 20*10*5 (cleaning cotton without cloth cover)