Ice-Like feel takes the stress out of skating, The soft inner layer absorbs vibrations...translation: less muscle fatigue, Skate longer and harder like you were gliding on ice, Sizzling Speed Superior rebound (resilience) in Rink Rat wheels softer inner layer maximizes the energy you put in let you generate higher speeds in straight-aways and bounce out of the tightest corners. Colors will vary, sizes available are :59mm, 68mm, 72mm 76mm