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Fabrics and Materials

Groundsheet fabric
The expected performance of a groundsheet is somewhat different from that of an outer tent. Here it is important that it withstands sharp stones and abrasion and that it remains waterproof for a long time. Tearstrength is of secondary importance, since there is rarely this sort of strain on the groundsheet.
The ground sheets of Hilleberg tents have been developed to the highest demands when it comes to resistance against abrasion, sharp objects and humidity. Our multiple PU-coated ground sheet fabric is second to none and performs brilliantly even at low temperatures. It weighs only 120 g/m2 (3.53oz/yd2).
In Hilleberg's truly ultra-light series, Akto, Unna, Nallo, and Nallo GT, the groundsheet fabric is a slightly lighter and thinner version of this fabric at 90 g/m2 (2.65 oz/yd2).

Inner tent fabric
The importance of the right inner tent fabric is undisputed. We have already mentioned the concept of double-walled tents; here, the quality of the inner tent fabric plays a role too. It is necessary to keep a balance between the permeability of air and the water repellence. We are trying to achieve a dry and pleasant environment. This requires sufficient ventilation and the need for the fabric to repel droplets of condensation from the inside of the outer tent.
The fabric also needs to be strong and resilient enough to take abrasion and rough handling. For this reason we chose the same type of fabric as we use for the outer tent but in a lighter version and with a repellent finish instead of a double waterproof coating. This treatment keeps water droplets from penetrating the fibers. The right parity between allowing vapor to pass through the material and repellence is the secret of a successful fabric for this purpose. In our tents, we have the best of both worlds: air can pass through but the proofing is stable enough that you can carry water in it! This sounds a bit like magic, particularly considering that this fabric weighs in at merely 35 g/m2 (1.03 oz/yd2).

Tent poles
The expected performance of a groundsheet is somewhat different from that of an outer tent. Here it is important that it withstands sharp stones and abrasion and that it remains waterproof for a long time. Tearstrength is of secondary importance, since there is rarely this sort of strain on the groundsheet.
The ground sheets of Hilleberg tents have been developed to the highest demands when it comes to resistance against abrasion, sharp objects and humidity. Our multiple PU-coated ground sheet fabric is second to none and performs brilliantly even at low temperatures. It weighs only 120 g/m2 (3.53oz/yd2).
In Hilleberg's truly ultra-light series, Akto, Unna, Nallo, and Nallo GT, the groundsheet fabric is a slightly lighter and thinner version of this fabric at 90 g/m2 (2.65 oz/yd2).

Zippers
Zippers can be a weakness in tents, but they differ in performance. The ones we use have proven to be very reliable. The worst scenario for a zipper is to get clogged with sand under frequent use. The sliders wear and fail to close the coils. This can be helped temporarily by squeezing the sliders with a pair of pliers, but eventually the entire zipper needs to be replaced. Our advice here is to keep the zippers clean by using a small brush every now and then to clean out sand and any other particles from the zippers. This way you can expect a long and trouble free performance from these components.
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