4" x 60 Feet Yellow Heavy-Duty Anti-Slip Tape Bubble = 20% They are also gusseted on

They are also gusseted on the sides so that they expand

Each mailer is weather and tamper resistant to avoid damages

This deep red colored mailer is a sure way to catch the attention of your recipient

Economical Shippers are light-weight

tape or can be heat sealed

4" x 60 Feet Yellow Heavy-Duty Anti-Slip Tape Bubble = 20% They are also gusseted on60 Grit, extra coarse sandpaper surface that has an adhesive backing. Moisture and grease resistant. For use in temperature ranges 20 to 150 F. Heavy duty has a coarser, thicker surface and aggressive adhesive for even better protection in greasy and muddy areas. Apply to clean, dry surface. Use on non porous surfaces such as sealed concrete and painted metals and wood.