VolcomMen's Kerosene 21" Hybrid Chino Shorts

Are these shorts good for swimming?

What is the inseam length?

I wear a size 36 waist and i want to know if i choose a 36 on here i should get apair of shorts thats 36 waist correct

Are these polyester hybrid shorts breathable? Or do they get really hot and constricting in the summer? Doesn't polyester have bad breathability?