Nike Free Metcon 3 The Nike Free Metcon 3 Training Shoe ($120) may look like it should be worn with jeans but it's actually meant for breaking a sweat in. Like the Nike Free family, this sneaker offers flexibility, allowing you to move in any direction along with stability to protect your joints. It's also great for workouts that include pushing sleds, climbing ropes, and sprinting. Image Source: shop.nordstrom.com Nike Free Metcon 3 Training Shoe $120 from shop.nordstrom.com Buy Now