Estes Recovery Wadding keeps your parachute in perfect shape when used properly. The leading cause of unsuccessful flights is failure of recovery deployment. If your rocket is precious consider one of Model Rocket Shop s Recovery Upgrade Kits with Kevlar Nomex and a nylon parachute. Replacing Estes fragile knicker elastic shock cord and bin-liner parachute and using permanently attached Nomex cloth instead of paper wadding can lengthen the service life of your rocket.