Reading in the reviews that it has a tight fit, I bought size 12 (for 12-year-olds) for my 9-year-old daughter (1.42 cm height, athletic body) and it is way too small!!! In 2-3 months it won't fit her anymore... I should have gotten size 14... The sizes of BDTK are completely unreliable, so don't rely on the company's size charts... Try them on in a store... It has fleece on the inside, it's nice, fashionable but the sizes are problematic. I wouldn't buy it again... I would go for tried and tested brands like adidas, Nike, etc. that have standard sizes with a little more money...