NWOT - Sperry Crest Twin Gore Linen Slip-On Shoes (still in box) The slip-on with a twist. These twin-gore linen shoes feature a metallic accent along the front that cascades down the side, illuminating it in a subtle shininess that makes the shoe pop with pizzazz. From Sperry. Style: Crest Twin Gore Features: slip-on style, textile upper, double-gore design, memory foam cushioned insole, no-marking rubber outsole Measures approximately: Heel 2"H, Sole 1/4"H Textile Upper Size: 9 Color: Blue