Perfect addition to the climbing gym in the back yard.  Well-molded plastic of the right type used for the yellow mount and for the blue periscope plastic parts.  Smooth rounded edges and seams on both.  I like the feature that you can demount the periscope and use it elsewhere, not just mounted.  It's held well and tight in the yellow mount, so I'm not sure at what age a kid could or could not pull this loose - maybe 5 or 6.  You should also consider your 'user audience' and mount this at a usable height that does NOT require the child to hunker down too much because that would make tilting head up to look through periscope harder.  I'd suggest 30 inches off standing platform, at a minimum height, because the viewer end does adjust and does settle lower and it can be pulled higher by 6 inches or so.  Viewing 'glass' faceplates and mirrors are plastic, too (I'm guessing on the latter), so I don't know how long the mirror finish will last or not last.  We'll find out.  When periscope is demounted and carried about, the viewing plates do rattle a bit in their retained positions.  A GOOD idea to not have these weather-tight because I can see this being laid down in dewy grass or out in the rain and water making its way internally.  Having these installed as they are should allow moisture to evaporate its way OUT again, especially when reinstalled into the yellow mount.  Being a picture framer with supplies and equipment, I made a 3 ft by 6x6 inch one out of cardboard and mirror glass for my kids years and years ago and they played with it in the house all the time.  I'm hoping to see my grandson and other kids do the same with this outdoor.
Perfect addition to the climbing gym in the back yard. Well-molded plastic of the right type used for the yellow mount and for the blue periscope plastic parts. Smooth rounded edges and seams on both. I like the feature that you can demount the periscope and use it elsewhere, not just mounted. It's held well and tight in the yellow mount, so I'm not sure at what age a kid could or could not pull this loose - maybe 5 or 6. You should also consider your 'user audience' and mount this at a usable height that does NOT require the child to hunker down too much because that would make tilting head up to look through periscope harder. I'd suggest 30 inches off standing platform, at a minimum height, because the viewer end does adjust and does settle lower and it can be pulled higher by 6 inches or so. Viewing 'glass' faceplates and mirrors are plastic, too (I'm guessing on the latter), so I don't know how long the mirror finish will last or not last. We'll find out. When periscope is demounted and carried about, the viewing plates do rattle a bit in their retained positions. A GOOD idea to not have these weather-tight because I can see this being laid down in dewy grass or out in the rain and water making its way internally. Having these installed as they are should allow moisture to evaporate its way OUT again, especially when reinstalled into the yellow mount. Being a picture framer with supplies and equipment, I made a 3 ft by 6x6 inch one out of cardboard and mirror glass for my kids years and years ago and they played with it in the house all the time. I'm hoping to see my grandson and other kids do the same with this outdoor.