DIMENSION. 6x10 inch padded envelopes(usable size-6x9"), with opaque teal poly film. The bubble envelopes feel nice to the touch and are perfect for labeling, stamping and handwriting (Please Use Oil Based Paint Marker pens. Don't Use Whiteboard Marker Pens）. COST-EFFECTIVE BUBBLE MAILERS. The padded envelopes are lightweight and water-resistant. Lower the shipping cost of your business and protect your products on the rainy or snowy day. SELF SEALED ENVELOPES. The adhesive on the fold-over flap is strong enough and goes end-to-end. There's no need reinforcement tape and it doesn't come apart unless you tear it up.