running vest is made of GRS-certified recycled ripstop fabric with a water-repellent finish. It has a GRS-certified RPET lining and reflective elements for better visibility. back of the vest has a breathable mesh design for increased comfort. It has adjustable shoulder straps and two chest pockets at the front for bottles, small accessories or a mobile phone. On the inside there is a separate compartment for a 1.5-liter hydration bladder (not included). Volume capacity: 5 liters. Ripstop made of GRS-certified recycled polyester, 420D.