| 摘要 |
The present invention is a waterproof sheet to draw infant developing curve made by marking a tall marking portion (3), a weight marking portion (4), a developing months' number marking portion (5), an average tall curve (6) and an average weight curve (7) so as to easily review a developing state of an infant on an ordinary air mattress main body (11), and by attaching a pressure change sensing type weight meter (9). |
