Worn twice. Kept in box. I've got like 40 pairs of Altras because they are so comfortable. The Altra Torin 3.5 Knit is a road shoe that can do just about anything. This shoe is light enough and fast enough to wear in a 5k, but durable and comfortable enough to perform well at the marathon distance as well. Lightweight. Comfortable Upper Sleek, breathable, engineered knit uppers with a reinforced A-strap internal support system provide a secure fit Recommended for road running, walking, fitness and cross-training Medium level of cushioning (28mm stack height) includes a responsive compound that returns energy into each step Wide FootShape™ toe boxes allow toes to splay for natural foot positioning and comfort Fully cushioned Zero Drop™ platforms (0mm heel-to-toe drop) Granted the APMA Seal of Acceptance, which the American Podiatric Medical Association awards to footwear they find promotes good foot health