You want to be confident when you work out because it takes a lot to make you work out. So many women really enjoy it, but it's a hard thing and you have to make yourself do it most of the time. I think you want to feel that you look good to make you want to work out a little bit more.

I'm not offended or embarrassed by the fact that I design clothes for women to wear. So when I meet women who love my clothes, it's a really good, straightforward thing. It makes me feel like I'm doing my job right.

For me, women's ski wear has always been black and, again, not as feminine or sexy as I think it could look while still having the technology there.

I wanted to feel good about the way I looked. I didn't understand why style had to be sacrificed for sports technology. I found when going to the gym women were wearing their own tees, without the technology. I started to think, does it make you run faster if you wear that terrible color or sweat less if you wear that horrible fabric? And I challenged it, and the answers were not there to why we were being given poor design work. It was something I wanted to bring to women's wardrobes.

Depending on the season, between 20 and 30 percent of my collections contain some sort of eco or sustainable element, whether it's a beautiful organic fabric or a natural dye. And obviously I don't use animal skins or fur of any kind.

Everyone can do simple things to make a difference, and every little bit really does count.

Being effortless is the coolest thing in the world