The jacket that matches the bottoms look nice together

My closet is full of Adidas tracksuits and separates, as I love this brand for its style and overall quality. However, my husband purchased this tracksuit for me for my birthday. The jacket arrived first, and I anxiously waited for the pants. When they arrived, I couldn't believe how huge they were. Granted, I am quite petite; but I have all womens size small pants (and mens size xs). There was very little elastic in the waistband, and no drawstring to tighten them. They would have fallen right off of me. I tried to exchange them for an XS, but they were sold out. Now, I'm considering returning the jacket; as I prefer tracksuits to separates. I am hoping that the XS pants become available, as the suit is very attractive.