I measured with a tape for the correct measurements. When the trainer arrived, I was so excited. I went to put it on and couldn't get the 2 sides to even barely touch. WAY TOO SMALL. Such a bummer. I will say the quality looked pretty good but I only had it out for a few minutes before repacking it to send back to Amazon. I was impressed with the overall quality so I will probably order a size (or 2?) up.