Sportive. com: \'Highly breathable, lightweight moisture wicking four-way stretch fabric, they are built with comfort and high performance in mind. Perfect for a day in the saddle, the jerseys offer the bold design one would expect from Proviz - and includes silicone grip around the hem and the arms to stop your jersey riding up, zip guards and soft touch seams are added for extra comfort.\'\' Three rear-drop pockets Lightweight moisture wicking four-way stretch fabric Silicone hem and arm strips Highly Breathable Material: 180gsm soft-touch 84% polyester / 16% Lycra blend Machine washable