I like the length of this mat -- I need a longer one because I'm tall. However, this mat absolutely stinks. The STRONG chemical smell is like a mix of mothballs and something I can't place. It is cloying. It made my eyes water. Day 1, I opened it up to air out in the house. I thought I was killing everyone; the stench was unbelievable. It permeated the entire first floor! I threw it out on the deck overnight for last three days. And after 4 days, it's still off-gassing. Much less than day 1, but it's still smelly. I'm going to leave it outside for as long as possible. It's supposed to snow tonight. Maybe that will help. Maybe I'm creating a new hole in the o-zone. I don't know. I hope the smell dissipates because I really like the length of this mat otherwise. I just can't bring it to a studio and kill people with the smell.