About Isotoner... Zappos.com is proud to offer Isotoner - Women's Casual: The ISOTONER name combines the terms isometric and toning to reflect 4-way stretch and massaging properties. Inspired by this ideal, Isotoner footwear provides comfort and good looks no matter what your activity. Isotoner boots and shoes are a wardrobe must for todays woman on the go. You have to wear them to believe them! Our Isotoner Collection that are available online: :: Isotoner Casual Shoes