Our PRO Bottle Sizes:
HidrateSpark PRO bottle: 17 ounces / 500 milliliters
HidrateSpark PRO Tumbler: 20 ounces / 590 milliliters
HidrateSpark PRO bottle: 21 ounces / 620 milliliters
HidrateSpark PRO Lite bottle: 24ounces / 710 milliliters
HidrateSpark PRO bottle: 32 ounces / 950 milliliters