Welcome to the GCN Tech Show! It's back, and this week we've got custom 3D printed helmets, electric gear, and bike upgrades. Should all racing cyclists be using the same bike? Let's do it! Alright, what's hot in tech this week then? Well, I've been in Taipei. Oh, I didn't know that. You've been in Japan, right? Yes, I brought you a present back from Taipei. Check this out, it's a gold cassette from Recon. Oh, I go with your gold chain. Yeah, he hasn't even opened it for me. Thank you very much, mate. I'll treasure that. Thanks, mate. What have you got me? Oh yeah, a slightly awkward... Yeah, it's on its way. It's just stuck in customs. They'll be naughty, you know, that sort of thing. So, oh yeah, don't worry. Mess on its way. Yeah, Hexo has just been launched and that is, in fact, the world's first 3D printed custom bike helmet, which is pretty cool. Just goes to show how far we've got in the crazy world of tech. So, the exact fit of the helmet is achieved by actually scanning your head with an iPad and the app creates a 30,000 point 3D mesh which can then be printed or grown, is a more precise term, into the helmet. Yes, now Hexo itself is actually comprised of plenty of little hexastructures which form a kind of a honeycomb structure. Now, the benefit, according to Hexo, of this is that if you were to have the unfortunate incident of a bike crash, the actual structure itself would bend and twist rather than compressing. So, therefore, the actual impacts onto your skull is less than with a standard foam helmet, which kind of increases in toughness when you're kids, doesn't it? Yeah, what? It's interesting....