Always Evolving

What are materials, designs and formats of the new generation of sleeping bags. Isolates and bivy bags.

It is very important to make sure we get not only a model of good quality, but the type of sleeping bag suitable to the climate that you will find our camping trips. You always have to choose one that will allow us to achieve a temperature of ideal comfort for us. The optimum is to have two: a bag for warm climates or seasons such as spring and summer, and one for cold climates or seasons as autumn and winter.

Cold and moisture from the soil can affect much the effectiveness of the stock market and the health of our body. That is why the use of insulating mats as an indispensable complement is important. There are two main types of them: the inflatable models, and those in closed-cell foam. Use a bivy cover increase heat retention of the pouch to sleep, as well as protect ourselves from external factors such as humidity, rain, wind or snow.

Not only the type, quality and quantity of insulating filler will determine the capacity of a sleeping bag coat. In its thermal efficiency has the sum of its parts and the overall construction of the product.

– Surround fabric: made up of an outer layer and an inner lining, which contain insulating filling. Used synthetics, especially different kinds of nylon (Oxford, RipStop, Pertex, etc.) and also some similar polyester fabrics. Some tissues, especially in high-end bags, have an impermeable-respirable membrane, as Gore Dry Loft. The outer face of the tissues in general has a durable water repellency treatment (known as DWR). Inner liners are, in the majority of cases, synthetic drying fast, though some cotton and synthetic fiber or single cotton, usually in bags for moderate climates.

– Thermal insulation fillings: are really the heart of the bags. This coat material can be of natural elements (pen, duvet) or synthetic (polyester fibres mainly).

Duvet (down, in English) is still the best insulating material, which provides maximum shelter with less weight. It consists of soft tufts of ultra-light filaments, growing up without the cannula that have larger feathers. The best quality is given by the use of the maximum amount of duvet in its composition. When the quality is lower, it may contain a percentage of feathers and loose strands that do not possess soft and pure duvet coat capability.

The best quality of duvet is obtained from goose feathers, and older have Tufts bigger, strong and durable. There is an international method to determine the quality and performance of the duvet. This is the fill power, the volume in cubic inches, occupied by an ounce (28.35 grams) of down when it reaches its maximum expansion or loft. Thus, under the 500 cubic inch quality is poor, from 500 to 600 is medium, more than 600 to 650 very good, and 700 or more, excellent.