Bash scripting, multiple conditions in while loop

I'm trying to get a simple while loop working in bash that uses two conditions, but after trying many different syntax from various forums, I can't stop throwing an error. Here is what I have:

while [ $stats -gt 300 ] -o [ $stats -eq 0 ]

I have also tried:

while [[ $stats -gt 300 ] || [ $stats -eq 0 ]]

... as well as several others constructs. I want this loop to continue while $stats is > 300 or if $stats = 0.