When the activity mat arrived, it had dirt/leaf on it. Not the best first impression. 
My 5-month old daughter can sit up with help. She loves how cozy it is and the prop pillow helps to give her a little extra support. She also uses it for tummy time. The mat offers 5 nature-inspired toys that encourage sensory exploration and keep her entertained. Her favorite is the bear mirror and the natural wood ring. They both excite her. The play mat is machine washable which makes it easy to clean. The downside would be needing to spot clean pillow and tray. Also, I wish the velcros on the tray were bigger so they are more secure when attached to the pillow.