Introducing the second instalment of our collaboration with activewear experts Castore, engineered for modern living. Lifestyle elements are entwined into a collection rooted in performance excellence - making the transition between exercise and urban daily activities one of simplicity. The Mason shorts have sartorial credits, engineered in a breathable jersey-stretch fabrication for a soft, athleisure feel. They're finished with an elasticated drawcord waistband, slip pockets, and REISS signature pinched seams - bringing a tailored element to this activewear piece. Wear them on sporting days or when lounging at home. Elasticated waistband. Drawcord. Slip pockets. Pinched seams. Jersey-stretch fabrication. Dual branding.