Hi.
“There’s tough, and then there’s tough.
Let us introduce you to some members of a winter swimming club in…, where temperatures often reach 30 degrees Celsius below zero.”
–Also were found: “There’s tough… then there’s Tina Clark tough!” and “There’s ‘tough’ and then, there’s Rollergirl tough” which makes it look a set expression and sound like ‘there is (someone) tough and there is someone even tougher’.
Used to compare two things, each of them outstanding?..