Plastic support straps for holding book, ring binder, notebook or the like that can be comfortably held in the hand for an extended period of time; Plastic ring adapter that allows a common three-ring binder, or folder generally used to retain perforated or hole-punched sheet materials, to be used to retain non-perforated or hole- punched books, loose-leaf sheets, leaves or sheeted materials of various dimensions and thickness such as printed matter made from paper or plastic and the like alo...

Plastic support straps for holding book, ring binder, notebook or the like that can be comfortably held in the hand for an extended period of time; Plastic ring adapter that allows a common three-ring binder, or folder generally used to retain perforated or hole-punched sheet materials, to be used to retain non-perforated or hole- punched books, loose-leaf sheets, leaves or sheeted materials of various dimensions and thickness such as printed matter made from paper or plastic and the like alo...