This running vest has the storage you need to keep distance run essentials, like hydration, gels, and your phone, close as you head from trailhead to tree line. Designed for Running. Chest Measurement: XS/S: 28''- 33''/ S/M: 34''- 38''/ M/L: 39''- 42'' / L/XL: 43''- 48''. Elasticated sternum straps keep your pack secure and snug as you run. Front drop-in pockets fit two 500ml hydration flasks. Back storage fits a 1.5L hydration bladder. Strap on top of shoulder keeps your hydration hose in place. Zippered and drop-in pockets for running essentials. Diagonal, zippered chest pockets for your small items. Reflective details. Hydration flasks, bladder, and hose not included. 'Wash with like colours', 'Machine wash cold', 'Do not bleach', 'Tumble dry low', 'Do not iron', 'Do not dry clean', 'Imported'. Abrasion-Resistant Fabric. Mesh: 89% Recycled nylon, 11% Elastane. Outer lower panel: 53% Recycled polyester, 43% Elastomultiester, 4% Elastane. Inner layer body: 53% Recycled polyester, 43% Elastomultiester, 4% Elastane. Outer center panel: 86% Recycled polyester, 14% Elastane.