Hi Team, Taking Pre-Order now. A heavy-duty rubber bumper with stainless steel inserts vulcanized into the rubber. Tough enough to withstand the abuse of intense daily use in the gym and the crossfit box! Price only available for a short time. http://store.getstrength.com/crossfit-equipment/ The Eleiko XF Bumper has a lower density which means a thicker bumper (from 30…