Ultra low gi carbohydrate powder unique to phd nutrition and a huge innovation in the sports nutrition marketplace waxy vol contains enduragrain fine ground waxy barley starch with a gi of lower than 30 waxy vol can be used pre during or post exercise it can be used to add quality slow burning carbohydrate calories to a mass building diet or to add fuel to the diet of an endurance athlete or team sports player the most versatile product in the phd range waxy vol is perfect for