I love decathlon, I think they have great products, with great ideas at very good prices. I do find that the sizing tends to be inconsistent but is usually on the small side. My son has some fantastic size 4 walking boots - he is a size 2, but the size 3 shoes I bought to compensate for them tending to be small are much too big (but he will grow into them). Unfortunately, it is too far for us to visit more than once or twice a year, so I have to keep guessing or not buy. Having said that, we've had some fantastic jersey trousers/athletics jumper sets for all 3 children at an amazing price, and I love my new jogging bottoms, my decathlon trainers have been a great buy and took me through my first half marathon.