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Exercise Mat links?

I have started Erica's 10 day challenge (love it, on day 3).. I work out in my kitchen on hardwood and would like to invest in a mat. I love the idea of her larger mat. Does anyone have one they have used and has stood up well? Looking for a larger one (not a yoga mat size) but not HUGE (my kitchen isn't that big). Maybe 6 x 4 ish. Amazon links would be welcome.

Thank you!