Under Armour Marbella Sport III Women's Flip Flop Synthetic sole Synthetic Performance Strap - Secures the foot in place and sits comfortably against the skin. Moulded EVA Footbed - Absorbs shock an helps to revitalise the foot. Sculpted EVA Outsole - Attenuates impact shockwaves whilst also allowing the wearer to gain an effective purchase on a range of surfaces. Sculpted EVA Outsole - Attenuates impact shockwaves whilst also allowing the wearer to gain an effective purchase on a range of surfaces.