Several years ago when my son was 11, I bought him a SG with a small 3 piece belt. He's 15 now and the only thing that I've changed on the pack is the bag. He'll be using it this coming Aug. for sheep, although I may have to get a larger belt. My plan is to have my 10 year old daughter using it by this fall as well. Start up costs aren't cheap, but I think between the two of them, and over the course of time, we'll get our $$ worth.