Merrell Spire Stretch Women's Slip On Casual Shoes. Treat your feet to enduring comfort with the Merrell Spire Stretch. Its full grain leather upper features a Lycra/Neoprene stretch collar contoured low at the ankle for a flattering fit. A molded arch bridge connects highly siped sole pods at the toe and wedged heel. Characteristic Merrell cushioning includes Air Cushion in an EVA footframe with Q Form alignment of a woman's stride. Removable footbed treated with Aegis antimicrobial solution. Traction patterned rubber sole with heel wrap.