Of course, your sponsors have to already be confirmed. If they are not, which is more common, at least call your dealer and reserve a time for when you think your order will be ready. In that way, your guaranteed a spot on the factory calendar for printing the clothes. Once the orders flood in, the delivery time moves from 4 weeks to 8 or 12 weeks. Once you've decided on the company, have the salesman come to a team meeting to show his samples so that each rider can try on the clothes.
Every company has their own version of small, medium and large.
It's better to find the correct size now than later . An important decision has to be made prior to taking orders. If you're supplying the clothes, decide what a full outfit includes and how much it will cost you. Be sure the rider is going to stay on your team. It's a big investment.