Core Coaster with Resistance Band (1 Core Coaster) One Core Coasters, Resistance Band and Instructions Poster Strengthen your core and entire body! For any fitness level (1-4 levels). Limitless exercises! The Core Coaster has been scientifically proven by the University of Alabama to activate the obliques 435% more than a traditional crunch and 300% more than a pike.. The Core Coaster combines the Ab Wheel, Sliders and Assistance/Resistance Training All in One Package! The Core Coaster is the most versatile core strength and stabilization exercise device! We guarantee that you'll get the best workout or your money back! Portable, versatile, sturdy. Works on almost any surface - wood, synthetic wood, concrete, rubber gym mats, thin carpet, linoleum, astro-turf. The Core Coaster is patented. Works on any almost any surface - Wood, synthetic wood, concrete, rubber gym mats, thin carpet, linoleum, astro-turf. Patent Pending.