For what it costs just to empty and clean one canvas or thermo bag, you can purchase 5 Kopykake decorating bags. Made of recyclable polyethylene, the clear plastic allows colors to be identified at a glance. No worries from the Health Department. No wasting of HOT water and no wasting of TIME.. Icings stay fresh and ready to use for days. Disposable means there is no messy cleanup. You can start with a fresh sanitary bag every time or you can refill them for continued use. Bags are perfectly suited to fit all tips, couplers, and decorating methods.