Advantage: The average baby tub can be upgraded without much cost. The baby can maintain a half lying posture, the head is always on top of the water.
Adults do not have to bother to hold the baby. Disadvantage: Configure the inner support for the baby tub, and you need to pay attention to its size. Before buying, you have to understand whether the bath bed is suitable for your baby tub, will not be too big to put in, or too small there is the risk of tipping.
Foam mat has been bitten by the baby mistakenly swallowed the possibility, and need to dry, but also easy to breed bacteria.