Flip him up, and let it flow! Thirst waits for no-one. The MontiiCo Sipper Lid, allows more H2O - faster! You can use the Sipper Lid with the straw or without, it's very universal. Without the straw you need to tip the bottle up for the water to come out, with the straw you simply suck the water out.
Oh and FYI, our Sipper Lid, Original Lid and Sports lid can all be used interchangeably, pretty rad we know.