Heelys Caution. Split suede, synthetic leather & synthetic nubuck overlays feature bold Heelys graphic screen print & contrast stitching. Heelys Wave Comfort Heel Bracket provides comfort & stability. Faux vulcanized gum sole.FATS low profile wheels with ABEC 1 bearings. Heelys are a close fit so it is advised to buy 1 size bigger than you normally would.