Be prepared for your next run with the Nike® Slim Waistpack. Featuring an adjustable stretchy belt that fits securely and comfortably as you run as well as an expandable pocket to hold your small essentials with an overall light-weight design. Fit & Design One size fits most Adjustable stretchy belt fits securely and comfortably as you run Expandable pocket holds your small essentials Contoured lightweight design for comfort and less bouncing Easy single-button closure on belt