Vionic Groove Black Slip On Casual Canvas Comfort Shoe Sz 9 Eco-chic. Canvas combines with recycled materials for a casual, cute, slip-on look that makes life on the go easy breezy. NOTE: The bottom soles have manufacturer specks of color by design, not a flaw. EVERYDAY SUPPORT: A podiatrist-designed footbed delivering unique THREE-ZONE COMFORT is built into every pair of Vionic shoes, which promotes stability and natural alignment from the ground up. Helping to relieve plantar fasciitis, flat feet, high arches, bunions, heel spurs, and lower back pain issues.