Race Ready SPIbelt - to hold a Race Number Bib, Energy Gels, and all your run essentials for race day - whether that be a 5K, Half Marathon, or Triathlon. Built for comfort and durability. Like our popular Performance Pro, the SPIbelt Endurance PRO has a weather-resistant zipper and pocket that will help keep essentials safe from the elements or a sweaty run. The spacious pocket will hold any phone on the market and has four gel loops on the elastic band to hold your energy gels and attached race toggles. The elastic on this belt is 1.5" wide, 50% broader than the Original SPIbelt. Fit & Design Bounce-free Expandable, secure, low-profile pocket Comfortable, soft elastic prevents chafing Sturdy buckle and glides for even the most active users Pocket expands to 9? x 4? x 2? 1.5" wide elastic Additional Details Fits waist size 25? through 38?