It's simple physics, just ask Isaac Newton,  if you want to keep something from falling "suspend" it from a fixed position. Got it Mr. Slouchy Pants, if you want your pants to really stay up try a pair of big boy suspenders or as the Brits call them, Braces, for a a truly polished look. 

1.5" Premium Forest Green Grosgrain Ribbon

Elastic Lower Back Strap

Full Grain Leather and Secure Clip-on Ends

Stainless Steel Hardware

Made in Brooklyn, NY, USA