Bests & Worsts Reviews from Amazon

I bought this Under Armour Undeniable **MEDIUM** for work-out on Mar 27th 2016. As the specification says, the medium size should be 13'' x 25'' x 11''. After I received the product, I figured it was quite small for a 25inch bag. So, I measured the bag with the ruler. It was 21 inch bag, the tag still said it was 25inch medium bag but the actual product wasn't medium bag (small bag size).