Ultimate Direction Trail Vests Onyx Extra Small. Paired with a 1.5L reservoir (included) water bottle pockets and secure storage throughout this vest has everything you need to hit the trails. Specifications for Ultimate Direction Trail Vests: Manufacturer: Ultimate Direction Unisex Size: Extra Small Age Group: Adults Application: Outdoor Sports Gender: Unisex Color: Onyx Apparel Fit: Regular Fabric/Material: Comfort Cinch 3.0 Weight: 7 oz Features of Ultimate Direction Trail Vests Comfort glide back adjuster system for full body adjustabliity Comes in 2 sizes for customizable fit Comes with a 1.5L reservoir so you have everything you need to run your first ultra Large back pocket can hold up to a 2 liter resivoir Up front bottle pockets can hold up to a Body Bottle 500 Secure front mesh pocket capable of fitting a phone Rear mesh stash pocket Easy access main pocket with quick auto closure Package Contents: Ultimate Direction Trail Vests Ultimate Direction 80460022ONX-X/S: Trail Vests Onyx Extra Small