BookSling maintains natural order

Ever opened your notebook (the one of the paper variety) only to find your pen inside missing? The BookSling aims to eliminate that problem forever by keeping both pen and bookmark together like they should be without getting lost. The BookSling is a simple add-on to any journals, sketchbooks, textbooks, puzzle books, and even clipboards that enables you to attach up to two writing instruments simultaneously. Each BookSling is made from a high quality woven elastic that is capable of accomodating most mid-to-large books, regardless of whether they are hard cover or soft cover. Each BookSling retails for $5.99.