Almost too close for a 40/90 mattress (same brand).

My child not being born yet I have not tested the effectiveness of this sheet but it looks very good, very elastic on the other hand, the mattress of my basket being relatively soft, it folds when I put it on, so I wait for the birth to put weight on it and alleviate this problem.

Waterproof material that seems very thin at first sight, to be checked in use if there are leaks on the mattress.