Offset design with hard sharp edges for grip; thick lips for maintaining speed and rippled inner walls for progressive energy return through turns when pumping. Designed to maintain grip, when desired they can be slid very predictably and smoothly to shed speed. These wheels will not slide right ouf of the box because of their grippy sharp edges. Repeatedly sliding wears downthe sharp lips allowing for smoother slides. Fore a more slide oriented 75mm wheel check out the Durian freeride wheels. The In Heats are a popular wheel for speedboarding in hig hspeed grip and rought road courses due to their size and wide contact patch.