| 摘要 |
PURPOSE:To provide a mattress especially for medical use with the good cushionability proper hardness and of less weakness and having the function capable of properly tossing about in a bed. CONSTITUTION:Plural groove parts 4 are formed vertically on both sides of the cushion member. In the mattress, two or more fillings on both sides and about 1/8 to 1/3 apart from both ends in the horizontal direction are formed at the proper intervals so that the back groove part is placed opposite to the surface or the position opposite to the surface is nearly at the center. |
