Ideal for business and private use, to mail out your goods and items, to your customers, family or friends, in a safe and secure way. 100pcs/Lots Black Courier Bag Express Envelope Sto... – Grandado Thickness / Strength of the plastic is approx 60mu / 60 micron. StarBoxes Pack Of 200 Poly Mailers Bags 6 x 9 - #0 White Self-Sealing Pouches Envelopes Self Seal Mailing Bags 10 STRONG WHITE COLOUR PLASTIC SELF SEAL PACKAGING MAILING BAGS - EXTRA White Plastic Postal Bags 6x9 Inch 200 Pack Peel Seal The height of bag DOES NOT include the self seal lip, which is approx 40-50mm, in addition to the stated height of the bag. 200 STRONG WHITE COLOUR PLASTIC SELF SEAL PACKAGING MAILING BAGS - SMALL SIZE 6 x 9" 170 x 240mm 60mu PEEL SEAL POLYTHENE OPAQUE POSTAL PACKING POSTAGE MAIL SACKS ENVELOPES MAILERS Visit the UKPS Store 4.4 4 ratings £1225 Size of bag stated in product title is inches and millimetres, and reads WIDTH (opening end) of bag x HEIGHT of bag. Bag has a self sealing peel and seal adhesive strip.