Ultimate Direction Hydrolight Belt Onyx Medium. Specifications for Ultimate Direction Hydrolight Belt: Manufacturer: Ultimate Direction Belt Style: Running Belt Age Group: Adults Application: Trail Running Running Hiking Gender: Unisex Color: Onyx Fabric/Material: Polyspandex Snow mesh 2-way stretch Application: Running Trail Running Hiking Features of Ultimate Direction Hydrolight Belt Securely carries 2 Flexform II 300 bottles for a total of 600ml of water Center back phone pocket Long front pocket for gels keys or other items Rigid waist adjuster to keep belt in place Five sizes for accurate fit Package Contents: Ultimate Direction Hydrolight Belt Ultimate Direction 80469222ONX-LG: Hydrolight Belt Onyx Large Ultimate Direction 80469222ONX-MD: Hydrolight Belt Onyx Medium Ultimate Direction 80469222ONX-MD: Hydrolight Belt Onyx Medium