Trainers are great and arrived on the day it was predicted. My only complaint is with the restrictiveness of the delivery, which was between 7am and 8pm. I was only given a more specific hour slot at 5.30pm, when I was text to say it would arrive between 6.39 and 7.39, and then it did not! I waited in all day and finally at 8.30pm it arrived. I really do think it should be possible to give a more specific time slot at the start of the day, and to stick with the time slot predicted. If this had happened, I would have been giving a rating of very good as the product and price were great.