I like these slides because they are plastic, rather than glass, which makes them safer for small kids. There is little risk of breaking the slides if they are dropped, or cutting their hands on the edges. I like that the slides are clearly labeled with a small picture to help kids easily identify what they are looking at. However, the slide is covered in a thin adhesive plastic that includes the name of the slide and the picture, and these makes bubbles in the slide making them look unprofessional.