The Mountainlife Iso-Viz Rucksack Cover is made from waterproof fabric complete with taped seams. The Iso-Viz Rucksack Cover has a 3M reflective transfer for night time reflectivity. The Iso-Viz Rucksack Cover comes packed in a waterproof reusable packing bag that creates extra space for additional items. The Iso-Viz Rucksack Cover has a mesh pocket at the front for quick & easy access. The Iso-Viz Rucksack Cover has a capacity of 20 – 35 litres.; Waterproof Fabric; The fabric of the Iso-Viz Rucksack Cover has a waterproof membrane or coating that prevents water droplets penetrating through the fabric therefore protecting you from the elements. This fabric will also be windproof.; Taped Seams; The seams of the garment Iso-Viz Rucksack Cover are taped to stop rain seeping through the waterproof fabric & into the Iso-Viz Rucksack Cover through the stitched areas. Taped seams are used to make the Iso-Viz Rucksack Cover fully waterproof.; Iso-Viz; The Iso-Viz Rucksack Cover is perfect for pedestrians, runners & cyclists to make themselves more visible.