Motion Note: Blood Orange Alpines are quick-rolling, controllable downhill wheels. The original, 80a durometer is a perfect mix of roll speed, predictability and grip. 80a offers slight amounts of compression to deal with road vibration and to assist gripping tough corners. Still, the big core gives the wheel tons of support, minimizes deformation, creates a more even wear pattern and puts your setup on the turbo booster super fast setting. The sharp lips and core size combine with the urethane to create a grip-to-slip ratio that's very apparent, and easy to stay on top of. All in all, skaters from the inexperienced, to the most knowledgeable, will love Alpines.