Carex oxygen supply tubing are designed with high-quality materials at a friendly price point. The over-the-ear design provides excellent stability and patient comfort. The tapaered nasal prongs have a unique design to anatomically fit the upper lip. This unique design eliminates flaps or ridges which can cause irritation. For the best in comfort, buy Carex oxygen supplies. Features & Benefits: Curved tip with tubing (over ear style); Kink-resistant, six channel inner lumen design; This item may be eligible for FSA and HSA reimbursement.