UGG. 1103622K CRNB. KIDS CLASSIC SHORT II RAINBOW BOOTS. CRYSTAL RAINBOW. With a super-soft wool interior and barefoot feel your little one s favorite boot is the same as ever but now incorporates showstopping rainbow sequins. Each boot is built to move the way kids do -- running jumping and whatever else they get into -- with a flexible rocker-bottom shape and super-light outsoles.