NWT Women’s size XS Ultra Pro Running Vest in Gibraltar Navy/Silver by Camelbak (color is a deep, teal-toned navy in real life). Includes one Camelbak water bladder, unused and with protective plastic still over the mouthpiece. Purchased directly from Camelbak at a sample sale, but it’s a little too small for me. According to their site, the size XS best fits a chest size of 26-32 in.