Even teens need toys and products of their own! As they grow older into their teen years, your child will also need to have new stuff. This new stuff needs to be updated to match their age. Products for teens may be more complex and therefore also much better suited for teenage kids of a certain age.
Teen stuff can be anything from board games, instruments, or even sports gear. And you need to get these Teen products because your kids are growing after all. And the stuff that they had as a kid is no longer usable by them now that they are older. And this will mean that they need to have newer stuff now that they are older. This new stuff is going to be better for them because teens are of course, much bigger. And they need a different set of products that kids have.
Teen products are not only larger, they are almost like the real thing as well. For example, if your teenaged child is getting a practice guitar, then a product for teens for them would be perfect. It would not be as large as a full-sized instrument, but it would be the right size for them to use and practice on!