Beginner Question..Please help!

I am working on my first knitting pattern tonight. I am trying to follow it but came across this
Knit 2 [6, 10] rows
What are the “6,10”?
Sorry for the insanely simple question…I am a beginner. Thanks so much!!

Normally, different numbers in brackets are for different sizes. The pattern should say at the beginning what size the default is–like size small–and the numbers in brackets would be for medium and large, but what you posted doesn’t quite seem to fit that scenario. Can you post a little more info?

This is the pattern I am using

Just under the picture of the strap is where I am at. Thanks!

The directions are for small (medium, large)

For small, you’d work 2 rows, medium-6 rows, large-10 rows