kids, boy and girl, in colorful tracksuits, sneakers. they smiling, posing on white studio background. hands in pockets

advertising background blonde blue boy bro brother brunet casual child childhood clothes collection colorful copy design education emotions fashion fitness full fun girl green hairstyle hands happiness indoors isolated kids length little modern parenthood people pink pockets posing red schoolboy season sister sneakers space sport sportswear stylish teenager tracksuits trendy