The RAJA small bubble wrap is manufactured with air retention technology, which prevents the bubble cell from losing air. This technology prolongs the life of the bubble, providing protection during packing, shipping and storing.RAJA small bubble wrap in a handy dispenser box keeps your bubble wrap neatly stored and clean. Easy to use, simply pull out the amount you need and tear along the perforations, no cutting required.Weights and limits Strength is measured in microns. These impact-resistant perforated rolls are 40 microns in thickness. Each bubble has a diameter of 9.5mm and a height of 4.2mm.Materials RAJA small bubble wrap is made from 2 layers of low density polyethylene with a co-extruded air retention barrier seal.Environmental information The long lasting cushioning performance of this bubble wrap enables it to be re-used. Less plastic material is used at source due to using a thinner co-extruded film compared to other non-barrier bubble. The box is also recyclable.Delivery information Delivered sealed in a dispenser box for instant use.