Spenco Quartet Men's Orthotic Flip Flops Synthetic Total Support Cushioning System absorbs shock and helps prevent over-pronation Orthotic Arch Support and deep heel cupping promotes stability - alignment and motion control. Soft strap and premium materials provide lasting comfort and wear. EVA surface custom molds over time to conform to the unique shape of the wearers feet. Metatarsal Padded Arch Support offloads pressure from the ball of foot to help relieve forefoot pain.