Aetrex/Lynco Orthotics - Lynco orthotics are available in a variety of styles to provide you with a custom selected solution based on your specific foot type and footwear style. Options include metatarsal support to provide additional protection at the ball-of-the-foot and/or medial posting to gently realign the rearfoot and control over-pronation. All Lynco orthotics are tri-density with a molded Pedic core to support the arch and provide maximum comfort.