Vionic with Orthaheel Technology Women's Gemma Luxe Slipper,Dark Brown,US 8 M Cotton Synthetic sole Snuggle up and unwind in the designed-for-comfort Gemma Luxe Slipper from Vionic&#174; with Orthaheel&#174; Technology. Innovative, podiatrist-designed Orthaheel Technology provides superior orthotic support, relief, and stability to help realign the feet to their natural position. Clinically shown to help relieve common causes of heel pain or plantar fasciitis, and knee pain related to over pronation and flat feet. Received APMA Seal of Acceptance. Click here to view Seal. Plush fabric upper and liner surrounds your feet in complete comfort and warmth. Closed toe slip-on with a fully adjustable hook-and-loop closure across the instep provides customization for a personalized fit. Fabric-covered footbed is treated with antibacterial, odor-resistant Ecofresh to keep your feet feeling fresh. Lightweight, flexible medium-density EVA midsole absorbs shock to reduce stress on the feet, ankles and knees. Durable TPR outsole with traction. For further information on t