I took a chance and bought 2 "families" of this set. I chose a darker color because I figured it wouldn't stain as easily. I LOVE these mannequins. Prestan has always been number one among us in this area and hasn't let us down. I love that my students can learn on their own by adjusting the speed and depth, not the teacher. It creates an "aha" moment for students and I love that. Batteries tend to last quite a long time and are easy to clean. My only complaint is that I have to make sure the bag liners are properly positioned before starting each CPR session, otherwise there will be a crease and air won't get in, causing the chest to rise. With a few extra minutes I can get them working, but otherwise just pop them out of your pocket, snap them together and get to work. Pretty expensive but worth every dollar. I also bought a Prestan AED and it will blow others out of the training waters. All my teacher friends want to borrow my dummies because they are so easy to learn and really help the student!