Double slider zip. Design: Designed to offer maximum load capability, functionality and comfort, by our Team Members and produced to the highest standard. Fabric: Tear and water-resistant treated polyester, used throughout the range is lightweight but extremely durable. Zip: All zips through the range are specially strengthened and sturdy to withstand extreme use. Handles: Stiffened and padded handles help the transport and to spread the load for the maximum comfort.