The Trail Runner™ Belt enhances miles on the trail by providing a hip belt and leash system for running with your dog on-leash and hands-free while comfortably carrying the essentials. The lay-flat design with light padding and stretch storage means a comfortable, bounce-free running experience when carrying your phone, keys, pick-up bags, and soft flask (not included) in the two zippered pockets. The separate leash attachment strap is compatible with most leashes: unclip the side-release buckle, thread the strap through the handle of your leash, and clip back in. The Trail Runner™ Leash (not included) is our favorite leash to pair with this belt. It’s a dynamic, shock-absorbing design and the optimal length for running, making the Trail Runner™ Running Belt and Leash the system that’ll have both you and your dog excited for your next run. What's New: A complete redesign of our 1st generation running belt for a minimal, layflat design appreciated by runners for its comfortable and bounce-free fit. Available in Two Sizes: S/M (20 - 35 in; 51 - 89 cm); L/XL (35 - 50 in; 89 - 127 cm) Volume: .6 L (for both sizes); comfortably fits a 360 ml Trail Runner™ Soft Flask COMFORTABLE & BOUNCE-FREE Lays flat with light padding for a comfortable, bounce-free design. LEASH COMPATIBLE Run hands-free with the intuitive leash attachment system that works with most leashes with a handle. TWO ZIPPERED POCKETS Two stretch zippered pockets for carrying essentials. Find the right size that works for your waist. Size Human Waist Capacity Small/Medium 20 - 35 in (51 - 89 cm) 0.6 L Large/Extra Large 35 - 50 in (89 - 127 cm) 0.6 L Materials & Care Materials Body: 82% nylon 18% spandex; 150 denier 2-way stretch 91% polyester 9% spandex with WR (water repellent) finish; recycled polyester spacer mesh (bluesign® approved) Leash Strap: 20 mm nylon webbing; polyoxymethylene side-release buckle Hipbelt: 40 mm nylon webbing; ITW Onyx buckle (bluesign® approved) Zipper: YKK reverse coil zipper with reflective cord Made in Vietnam Care Hand wash Mild detergent Ai