We have six astronauts onboard the space station. We come up in groups of three because that's what the Soyuz, the Russian Soyuz spacecraft holds. So my group of three is myself and two cosmonauts from Russia. And the other crew is a Russian, an American, and a French astronaut. Right now we have six people onboard and most missions are around five to six months long. Our spacewalking seats are very heavy to answer your second question there. They weigh about 250 pounds on Earth, but of course up here they don't weigh anything, which is nice. However, we still need someone to help us put them on because they're very bulky and usually you get in and you need help of one or two other people. The suits are made of a material called TMG, which is thermal micro-media or is garment. So it's just a bunch of layers, I think about eight layers that accommodate and kind of the white part on the outside that you see when we're going out to do spacewalks over.