C4 Metallic Silver Holographic Padded Bubble Envelopes (Qty 100) 230mm x 324mmAdd a touch of brilliance and protection to your shipments with our C4 Metallic Silver Holographic Padded Bubble Envelopes. Measuring 230mm x 324mm, these envelopes feature a dazzling holographic metallic finish combined with a bubble padded interior for superior cushioning. The striking holographic design gives your packages a dynamic, reflective appearance, making them stand out in the mail. Inside, the bubble wrap lining provides excellent padding,