If you see a +20 degree rating that would mean that the bag should be warm enough for temperatures that are 20 degrees or warmer. And if you see a - 20 degree rating then it has been determined that the bag should be warm enough for minus 20 degree weather.
Rectangular sleeping bags are the original and most common shape you'll see on the market. These are simple but effective designs and continue to dominate the market for recreational camping and slumber parties alike. While originally being just two blankets zipped together, over the years the technology has allowed manufacturers t fill them with synthetic material creating better heat retention than the old styles. Some are filled with synthetic fiber, wool, cotton or down however if you're allergic to down, this may not be an option for you. There are many debated as to which one keeps you warmer and it really just a matter of opinion. I personally don't think there is much of a noticeable difference between the fillings however synthetic fibers will not absorb water and will keep you warmer even if the bag is a bit wet. A wet down sleeping bag is very hard to dry out and is considered worse than having no sleeping bag at all. In cases where you're in a survival situation synthetic is definitely the choice you should go with. Wool tends to stay dry however it is much heavier and is harder to transport because of that extra weight. Synthetic will keep you warm however it tends to compress easier and the bottom of the bag will let cool air in because of this. Hanging them and changing the position when storing is the preferred method of many outdoor enthusiasts as this keeps them from forming dead spots where the fibers have been crushed and rendering them ineffective at keeping you warm on cold evenings.
The shape of the actual sleeping bag is down to personal preference. The general choices are the usual rectangular shape, the tapered shape, or the mummy bag. Some people may not like the feel of sleeping in a normal rectangular shaped bag, preferring the closeness of a tapered one, whereas others may feel too claustrophobic.
Sleeping Bag Wednesday , April 04th , 2018 - 20:51:15 PM
Any content, trademark/s, or other material that might be found on this site that is not this site property remains the copyright of its respective owner/s. In no way does gpots.org claim ownership or responsibility for such items, and you should seek legal consent for any use of such materials from its owner.