WOW! You guys have blown us away! Our XPO Trainers are selling FASTER THAN EVER, and we just can't keep our inventory in stock. We know this is a good problem to have, but we do apologize to our awesome customers for the delay in production. Our next round of XPO Trainers should be ready for shipment around mid-September. If you are wanting an XPO Trainer in the near future, please email us at firstname.lastname@example.org to get on the waiting list!