2. Look at the color. The color of the fitness rack should be bright, which can exercise the baby's eyesight and make the baby feel more cheerful, lively and fond of laughing.

3. Look at the function. There are many ways to use the fitness frame with detachable game pad, but the actual needs of the baby should also be considered. If the baby is young, buy one that can be used for lying down, and if the baby can stand, buy one that can be used for standing, so as to exercise the baby's standing ability and leg muscles.

4. Look at the height outside. The lateral height should consider whether the baby can stand and use it. If it is too short, the baby will have to bend down to hold it, which is not good for the baby's spinal development.

5. Look at the bottom length. If you want your baby to lie down and sit, you must consider whether the minister is enough for your baby and whether it is convenient for your baby to use when wearing thick clothes.