The 661 Peewee Defender 2.5 Roost Deflector fit my son really well. It gives plenty of front and back coverage and he is very comfortable wearing it. I have used the adult version of this product and I really like it. If you are looking for a good chest protector for your kids (ages 5-8). I recommend the 661 Peewee Defender 2.5 Roost Deflector.