Weight
The weight of a tourist rug depends both on the materials of manufacture and on the geometric parameters, type (inflatable or self-inflating) and the purpose of the model. It can increase due to the presence of an additional thermal insulating layer based on aluminium foil, etc. Note that this parameter is of priority when transporting on oneself (on foot, especially in difficult conditions) — for such cases, models with a
minimum weight are best suited. In situations of tourism in transport, or going out into nature, the convenience of the product will play a greater role than its weight.
Filler density
According to the density of the filler, a general conclusion can be drawn about the strength, weight and level of thermal insulation of the tourist rug. With an increase in the density of the filler, the resistance of the tourist rug to mechanical wear increases, but at the same time, the mass of the product increases. Also, rugs with a denser filler have worse thermal insulation — this is due to the structure of the filler itself, because the lower its density, the more air-filled cells that limit heat loss. To simplify: high density — higher strength, but worse heat retention; low density — lower strength, but better heat retention. In general, the density directly depends on the type of filler. So, for foamed polyethylene and ethylene vinyl acetate, it can be 25-70 kg / m³, but the density of polyurethane foam is usually 12-40 kg / m³.
