This Co-ex poly bubble mailer combines multi-layer co-extrusion technology with advanced cushioning, making it an ideal packaging solution for modern e-commerce and premium logistics. The outer layer is made of multi-layer co-extruded film (Co-ex Film), which offers exceptional toughness and opacity. This not only provides a smooth, professional appearance but also ensures excellent privacy protection. The interior is lined with high-density shock-absorbing bubble film, utilizing a robust air-cushion layer to defend contents against external impacts and pressure.