What’s behind the legendary “Made in Germany” waterproof quality? We work exclusively with durable materials, advanced bonding methods and proven types of closures. For instance, we use high frequency welding to meet the highest of waterproofing specifications. This helps to distinguish ORTLIEB products as true outdoor champions compared to other merely sewn or glued products.


Our outstanding waterproof quality is based on selected materials that are developed for specific applications. Such materials include polyester, nylon and Cordura fabrics that are coated on one or both sides. If a fabric is coated on one side only, the opposite side will retain its textile look. If both sides of a fabric are coated, they will both have the familiar tarpaulin look. ORTLIEB's thermoplastic coatings meet extremely high waterproofing specifications, and are therefore far superior to most commercially available tent or backpack coatings.


The coated fabric used by ORTLIEB – including all welded seams – continues to resist leaking when exposed to a 100,000 mm column of water! This extreme degree of waterproofing is achieved using a process known as high frequency welding (HFW). Instead of applying heat from the outside, HFW involves the application of high frequency voltage to the objects that need to be welded. The voltage causes the molecules within the various materials to vibrate and, essentially, to generate heat. Softened from within by the heat, the materials are then bonded under high pressure, leaving the welded seam at least as strong as the surrounding material.


The third important factor for high waterproof and dustproof performance is the type of closures used. All of the closures used in ORTLIEB products are subjected to extensive environmental simulation testing. One common test parameter is referred to as ingress protection (IP). Originally used in the field of electrical engineering, IP ratings have become increasingly common in the outdoor recreation sector.