From Dr. Scholl's, the Nice Day Now Shooties feature: Microfiber upper partially made from recycled plastic bottles Lightweight, flexible construction moves with you Slip on fit with zipper closure for easy on/off and secure fit Fabric linings and topcloth partially made from recycled plastic bottles; partially recycled toe box and heel counter Anti-microbial, anti-odor Insole Technology with anatomical cushioning, comfort, & arch support that uses 15% cushy plant-based BLOOM® foam insole. Approx. 1.33" lug outsole Imported. Styling Notes: This style is shipped in an environmentally preferred 1-piece box made with primarily recycled materials that can be recycled & soy-based inks