micoach is all you need to get the results you want.
I noticed with Adidas pants that you should always go a size smaller than what you are. i bought these in a medium with hopes that they would fit me like they do the guy in the picture. but unfortunately they do not. i'm about 5'7-5'8 with a 31-32 waist size and i sent them back in for a small and tried them on an they fit just like the picture. i have bought other Adidas pants and have noticed the same as well. but overall they are nice sweats and i would recommend purchasing.
Coolest colors ever! But size was about 1 size larger than i ordered, so pick one size smaller. Worse of all they are stiff and a tad scratchy. Your kids will be super cool but possibly super uncomfortable. Fabric is kind of a throwback to a polyester suit...