I purchased this for my daughters to use while clay shooting.  Shield is a good size and may actually be large for some.  It contains a stiff filling and is about 1/4" thick.  It's not gel filled.  We intend to add it clay shooting vest.  We'll create a pocket on the inside of the vest that this can slide into.  I think it'll work well in that application.  For the money, I think it's adequate.