Shoe liner but poor support
These are indeed very light. Feather Light Children's Insoles are very this and light weight. They do not bulk up the inside of the shoe. If you are looking for a nice thin shoe liner for your child (or petite adult feet) this would work. They can be trimmed to fit. There is a firmer plastic support under the heel.  They advertise a contoured heel cup and arch support. Their concept of arch support is not my definition of support. As you can see in the image picture, the contoured heel cup is an angled edge around the heel and arch. If the heel fits exactly into the flat surface it may be helpful but the width of the 'contour' can not be adjusted. The main problem I have with these is there is no discernible support under the arch. The contoured side at the arch does not provide support. I ordered these for my young man with plantar fasciitis, he needs a good snug heel fit, heel cushioning and real arch support: Feather Light Insoles do not measure up. Sorry . I hope my experience can save you some frustration if your youth needs real arch support.  Disclaimer: I purchased this product at a discount in exchange for an honest, unbiased review.
Rating: 3 stars