From Dr. Scholl's, the Reverie Perforated Ankle Booties feature: Microfiber upper partially made from recycled plastic bottles Lightweight, flexible construction moves with you Outside zip closure and inside stretch gore for easy on/off Fabric lining and topcloth partially made from recycled plastic bottles Anti-microbial, anti-odor insole technology with cushioning, comfort, & arch support Insoles partially crafted with 15% cushy, algae-infused BLOOM® foam Approx. 1" TPR with faux cru stacked heel 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.