Our wide range of clear mailing envelopes are available in sizes from C6 to C3 in a variety of material grades. When you need loose or blockheaded clear mailing bags in 30micron to 50micron, we have it with our range of stock clear self-seal mailing bags. Available straight from stock, with next working day delivery for free. Just place your order before 2:00pm Monday-Friday, and chances are you’ll be ready to start packing the very next day.