These bubble mailers are functional. Crafted from PE materials.The multi-functional design makes them suitable for a wide range of uses, from packing fragile dishes to securing electronics during . Features - Color: Transparent -Material:PE - Size: 8.50X8.00X0.10cm/3.34X3.14X0.04in -Enhanced shock resistance: the thickened bubble layers provide shock resistance, ensuring your items remain intact during handling - design: the selfadhesive strip allows for a secure and easy sealing process, enhancing packaging efficiency - cushioning: the pe material offers exceptional cushioning properties, protecting delicate items from bumps and drops -Multipurpose packaging: suitable for various scenarios such as ecommerce shipping, postal services, and household moving, offering -PE materials: made from PE materials, these bubble mailers are durable Package list: 5 pcs x 100 pcs x bubble mailers