Florensi Yoga Wheels are a multi-purpose tool for practicing yoga, back massages, strengthening your core, and improving balance and flexibility. This set includes 3 sizes for varying degrees of firmness/pressure to target your specific training needs. It includes the Large 13” for deeper poses and backbends, the Medium 10” Wheel for stretching out your back and hips, and the Small 6” Wheel ideal for massaging your neck, back, and legs.