Mailing Packs & Boxes
1000x 11x16" Grip Seal Clear Self Resealable Zip Lock Poly Polythene Plastic Bags
Non Toxic Medium Duty (MD) Polythene Bags approx. 150 Gauge (35 microns) Grip Seal Bags ensure the bag stays closed but can be opened easily 18 Sizes Available Polythene bag dimensions are displayed in Width (opening) x Length (depth)
https://www.bizrate.co.uk/mailingpacksandboxes/1000x-11x16-grip-seal-clear-oid39745262126.html