Hello t.w.1987,
you can find lots of information about tennis gear if you visit our learning center:
http://www.tenniswarehouse-europe.com/lc/
If you have any questions about our ordering process and the options for grip size and tension I would think that our costumer service can help you.
http://www.tenniswarehouse-europe.com/CustService/
Please do not hesitate to contact us if you have any question or if you need any further information.
thanks,
Stefan/TWE