ALPS OutdoorZ Redwood -10°F Cold Weather Sleeping Bag for Camping, Hiking & Backpacking - Lightweight & Water-Resistant for Outdoor Adventures

There are two versions of the ALPS OutdoorZ Redwood Sleeping Bag (we bought both versions):- The -25° version (13 pounds, 38" by 80")- The -10° version (11 pounds 8 ounces, 38" by 80")In short, I highly recommend these ALPS sleeping bags for situations where you only need to carry them a few hundred meters or less.These sleeping bags are not suitable for backpacking.- They weigh too much and are much too bulky. These bags are about 4 times heavier than our backpacking sleeping bags.- These bags would be great for: Car camping (i.e., parked near the campsite); cabin or lodge camping; sleeping in a van, camper, travel trailer, or sleeper section.Great for emergency preparedness:After seeing the news about the 2021 Texas winter storm and resulting power outages and deaths, we bought two of these sleeping bags to supplement our backpacking sleeping bags.The bags are very good quality. I quite like the (comfy) heavy flannel lining and the heavy canvas backing.Temperature ratings:- I did not find any info on how the temperature ratings for these bags were established. One is "rated" for -10° and the other for -25°, but what does that mean? Many manufacturers now use standardized methods to establish a bags temperature rating, such as ISO or EN standards. I saw no mention of ISO or EN for these bags, so I assume the stated rating were established by the manufacturer using their own methods.- You might benefit from performing a search for: (1) Sleeping Bag Temperature Ratings; and (2) Sleeping bag temperature ratings men vs women.- A bag's temperature rating does NOT necessarily mean that you will be warm at that temperature. The rating could be a "survival rating" (you will survive at that temperature) or a "comfort" rating (you may not be warm, but you won't be shivering at that temperature).- Temperature ratings are based on the heat-generation rate of the assumed occupant. A 200 pound man will generate more heat than a 100 pound woman, therefore the man’s sleeping bag requires less insulation. A general rule of thumb: Women should raise a sleeping bag's temperature rating by 10 to 15°. Therefore, the -25° bag would be rated as -10° for a woman, and the -10°F bag would be rated as +5° for a woman.- Your personal comfort in a sleeping bag will depend on your gender and your weight and your overall health and metabolism. Just guessing here: I'd say the -25° bag might be good down to +5° (for a comfortable sleep), while the -10° bag might be good down to +20°. Having spent many a night shivering in a sleeping bag during winter camping trips, I'd go with the -25° bag.As with any sleeping bag, you should consider:- Using a sleeping bag liner, even if it is a spare sheet. The liner (or sheet) is much, much easier to clean than a sleeping bag. Trust me on this one. A liner will also add an additional layer, making you warmer.- Use a ground cloth and a sleeping mat underneath the bag. When you lie down in a bag, you compress the insulation between you and the ground, making it much less effective. Having a pad between you and the ground will provide you with more insulation.- While winter camping, I almost always wear the following in the sleeping bag: (1) long-johns or other base layer; (2) two layers of socks (after drying my feet); (3) warm head covering.