The 3 stage superseatreg offers 360 degrees of floor time activity fun booster in one it is a secure and comfortable area for your growing infant to learn to sit up and interact with the environment around them with the summer infant 3 stage superseatreg your baby can experience play while also sitting up its the ideal place to keep baby entertained safe and happy the 3 stages soft foam support seat activity seat booster seat features soft foam insert adds comfort helps bab