After doing some hiking this weekend with my wife and son in the Smoky Mountains in Tn.they have decided that they would like to go backpacking with me this fall and winter.I need to find packs to fit them now.My wife is about 5'5" about 100#,my son is only 7 years old.I would prefer internal frame.My son would only be carrying his sleeping bag and other lightweight items so it need's to be a very small pack to fit him well.Do any of you have any idea's.Place's to look maybe?Thank's.