Marathon runner and Pittsburgh Marathon winner Magda Lewy wears the Nathan HPL 008 Race Vest while she trains for the Olympics. Hiding water bottles along your training route didnt work for Lewy we know it wouldnt work for usNow, which bush did we stash that bottle in?, but given her focus on speed, she didnt want to wear anything heavy that could mess with her stride. Which is where this race vest comes in. The 008 weighs in at a mere 5.5 ounces and holds 1.5 liters of liquid for you. Plus, a front holster holds energy gel and a back pocket carries a jacket or gloves.