NWT Kate Spade Belt Bag in Black 5.3 x 8.2 x 3.1 Adjustable 29"-41" tip to tip Welcome back, fanny pack! Our obliques have missed you. The iconic staple of the '80s makes a triumphant return in this nylon version of the classic fanny pack—perfect for when you're traveling light. The watson lane betty can be worn crossbody or looped around your waist--either way, hands-free and convenient. made from Kate Spade’s signature chic matte nylon and with a zip-top closure, it's very hip (if you will).