MERRELL Women's Boots for Your Outdoor Adventures The Merrell Wmns Fly-Strike Women's Boots feature a mesh upper for breathability and lightness, traditional fastening, a padded collar and decorative stitching. Breathable mesh lining and 50% recycled EVA insole with 100% recycled insole cover. Super Rebound Compound for durable shock absorption in the heel, grippy Merrell rubber sole with durable traction. Material: mesh, EVA, rubber