Sonik Sizzla Flask The Sizzla flask is ideal for keeping your hot or cold drinks at the right temperature for up to 24 hours. This makes it perfect for longer trips. It also has a screw-on lid that holds up to 200 ml, making it ideal for use as a mug. The lid is also fitted with a BPA-free push-button closure that reliably prevents leakage. Dimensions (xH): 8.5 x 30.5 cm.