The Messi x Stanley High Precision Flow Mate System 1.3 QT Stanley 1913 The Messi x Stanley High Precision Flow Mate System 1.3 QT Stanley 1913 The Messi x Stanley High Precision Flow Mate System 1.3 QT Stanley 1913 Stanley x Leo Messi The GOAT Collection 1.3qt High Precision Flow Mate. Start early, stay late with the Messi x Stanley GOAT Collection. The 1. 3 quart High Precision Flow Mate System features a unique stopper. No twisting needed as the trigger button gives you a continuous pour. Shaped like a mate gourd, the insulated lid doubles as a mug so you can fuel your dedication on and off the pitch.