Easy Spirit Walk4Ever Sling Shoes Enjoy the comfort of Easy Spirit walking shoes in this new take on its comfortable Waterfall style. Hug feet with the stretchy uppers, made of silk nuvola fabric, leather, and mesh. Easily remove and put on these shoes with its pull-tab backstrap. Removable Elon insoles absorb shock for less impact on the knees and lower back while walking. Wipe the uppers with a damp cloth to clean.