Abstract: The cushion for protecting spinal posture is for placing on a flat chair surface and includes a base member, a sacrum support member on the base member perpendicular to the flat chair surface, and a back support element at 90 or 135 degrees from the flat chair surface. The sacrum support member presses against the user's sacrum and forces the user's vertebral column to be perpendicular to the flat chair surface, thereby maintaining the straightness of the user's vertebral column.

Abstract: A method for making an insole includes a step (1) for preparing a base, attaching at least two reinforcement layers on a top of the base and a top layer attached on the base and covering the at least two reinforcement layers, the respective peripheries of the reinforcement layers being attached to the base so as to form a combination unit, and a step (2) for pressing and cutting the combination unit to obtain insoles, the reinforcement layer being enclosed between the base and the top layer. The method is suitable for mass production of the insoles. The insole includes a reinforcement layer which is enclosed between the base layer and the top layer.