The present invention provides a washable diaper having a waterproof interior channel the walls of which are formed from the leg cuffs, for holding a removable absorbent insert, whether disposable or re-usable....http://www.google.ca/patents/US5360422?utm_source=gb-gplus-sharePatent US5360422 - Washable diaper with liquid impervious channel for retaining disposable absorbent insert
