Home Slickdeals 12-Count 11oz Muscle Milk Pro Series Protein Shake (Knockout Chocolate) – $15.12... Slickdeals 12-Count 11oz Muscle Milk Pro Series Protein Shake (Knockout Chocolate) – $15.12 w/ S&S + Free S&H By ARCOM - 27 January 2019 122 0 SHARE Facebook Twitter Go to the deal page: 12-Count 11oz Muscle Milk Pro Series Protein Shake (Knockout Chocolate) – $15.12 w/ S&S + Free S&H