Vestibule length
The length of the vestibule provided in the tent.
See above for more details on the vestibule. As for its dimensions, the length of the vestibule is measured along the same side along which the length of the entire tent is measured; and the width of this compartment usually corresponds to the overall width of the tent, and it does not need to be specified separately in the specifications. At the same time, we note that due to such measurement rules, the length of the vestibule is often less than its width; this is quite normal in this case.
The specific ratio between the dimensions of this compartment in different tents may be different. However, in general, a longer vestibule is usually larger and more capacious than a shorter one. When choosing, it should be taken into account that a large and spacious additional compartment increases overall comfort, but it significantly affects the price and weight of the tent (not to mention its overall dimensions). So when choosing for this parameter, it is worth considering the real conditions and features of the operation of the tent. We only note that in order to organize additional beds, it is worth paying attention to vestibules with a length of
at least 150 cm — usually, they can accommodate additional places at least across, and often along the tent.
Water resistance of tent
An indicator that reflects the ability of the tent awning to withstand moisture without getting wet. It is expressed in millimetres of water column — the height of the water column that the awning can withstand (the area of impact is out of the question, because the load per unit area under water depends only on the height of the water column and is not related to the area of \u200b\u200bits base). The significant figures indicated in the characteristics (for example, 4000 mm of water column, i.e. 4 metres) are due to the fact that raindrops can have a significant speed and, when they hit the tent, create a load at the point of impact comparable to the pressure on depth of several metres.
In general, the higher the waterproof rating, the better the awning will cope with the effects of rain and snow. Indicators up to 3000 mm w.c. Art. are considered sufficient for places where it rains rarely, awnings for 3000 – 7000 mm of water. Art. allow you not to be afraid of intense downpours, and in expeditionary (see "Destination") tents designed for extreme conditions, this figure can reach 10,000 mm of water. Art. and even more. However, more water-resistant fabrics, usually, have a significant weight, so in each individual case it makes sense to choose the option that is optimal in terms of durability and weight.
Bottom material
— Polyester. Synthetic material with good durability and waterproof performance. In addition, it is resistant to adverse effects (does not lose strength when wet, exposed to acidic and alkaline environments, temperature changes).
— Nylon. In general, the characteristics of nylon are somewhat lower than those of polyester: it tends to stretch when wet and is generally less resistant to adverse effects. At the same time, given that most owners use tents in relatively simple conditions, these points are not critical; in addition, some manufacturers use a special treatment to improve the durability of nylon.
— Polyethylene. This material is mainly used in inexpensive models of camping tents (see "Purpose") — this is primarily due to its significant weight. For other characteristics, it does not have key differences from other materials.
— Polyamide. The general name for a class of fabrics, which includes, in particular, nylon and nylon. Some manufacturers use this term for marketing purposes: "polyamide" sounds more solid than "nylon", although these materials practically do not differ in characteristics and are used in the same way — mainly in inexpensive models.
