Often asked: How Much Loft Is Needed For Sleeping Bags?

A sleeping bag’s loft rating measures how well its filling (usually down) traps air. 550-650 loft is considered lower-quality, while 750 loft is good and 850+ is the best quality available. Sleeping bags with higher-quality loft are NOT warmer.

How much should you fill down a sleeping bag?

There are many factors when searching for the right sleeping bag, but let’s look at the down right now. Down insulation in most sleeping bags range from about 400 to 900. Down rated 500–650 is warm enough and light enough for most conditions, and 800–900 fill is used for very lightweight and very cold-weather gear.

Do I need a 15 degree sleeping bag?

For all-purpose three season use, I suggest a sleeping bag rated to 15-20° degrees above zero. For maximum versatility, a bag with synthetic insulation is always best. The reason is because synthetic bags dry quickly and don’t lose all insulating ability if they get wet.

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How warm is 650 down fill sleeping bag?

In fact, you can get very warm sleeping bags rated to -20ºF (-29ºC) that have a fill power of 650. These bags are plenty warm, but they’re just not very light or compressible.

Can I use a 15 degree sleeping bag in the summer?

Up here, the weather can change quickly, and get cold even in the summer, so that’s why I use a bag with the 15 degree rating. With layering I’ve even been able to use it down to -25C. Whatever rating you decide is best for you, I highly encourage you to take a look at the Phantom Series bags from Mountain Hardwear.

What is the difference between 850 and 950 down?

What’s the difference between 850 and 950 fill power down? Fill power is a way of measuring how much space a given down type can fill. For example, 1 ounce of 850fp down will fill 850 cubic inches, whereas 1 ounce of 950fp can fill 950 cubic inches.

How do you calculate fill weight?

Down Fill Power It is calculated by how much space 1 ounce of down clusters takes up in a cylindrical tube. For example, 1 ounce of 800-fill-power down will loft to 800 cubic inches, 1 ounce of 700-fill-power down will loft to 700 cubic inches, etc.

What is a 20 degree sleeping bag?

Traditionally in the U.S., a sleeping bag’s rating indicates the lowest temperature at which the sack will keep the average sleeper warm (i.e., a 20°F bag should keep you comfortable down to 20°F). It will make REI the first major American retailer to enforce a standardized rating system.

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What is the standard size of a sleeping bag?

First, length. Men’s sleeping bags come in two standard lengths, regular (which fits people up to 6 feet in height) and long (up to 6 feet 6 inches). A short version is sometimes available as well, which usually fits people up to 5 feet 6 inches.

Can you use a 0 degree sleeping bag in the summer?

In short, yes you certainly can use a winter sleeping bag in the summer but if you only plan to camp during Spring/Summer then you may find a winter sleeping bag too heavy and too thick. Whereas if you are camping year-round you can heavily benefit from using a winter sleeping bag all year round.

Is 600 or 650 down warmer?

A down fill rating of 600, for example, means that one ounce of down can cover 600 cubic inches. When purchasing a high quality down fill jacket, you should look for a fill power rating of at least 550. A quality jacket of this caliber will be both warmer and more comfortable.

What is the difference between 650 and 800 fill down?

Fill power vs. A 650 down fill jacket with 330g of down may be as warm as an 800 down fill jacket with only 120g, but the 650 fill jacket will be bigger, heavier and take up more room when stuffed in your pack. The warmest down jackets are built with a high fill power down and a heavier down weight.

How warm is a 0 degree sleeping bag?

A zero degree sleeping bag has a temperature rating of 0°F. This means that the average sleeper will stay comfortably warm down to 0° Fahrenheit. The actual temperature you stay comfortable in each bag may vary based on your personal body heat.

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Can I use a 30 degree sleeping bag in the summer?

Unzip it if you get to warm and wear a layer if to cold. Sit back, relax, have a home brew. A 40 degree bag wouldn’t be enough for some summer nights, but I think a 30 would work fine except for the really hot nights.

Is a 0 degree bag too warm?

Overall, probably 50% of my nights out are below freezing. My “shoulder seasons” nights are usually around 15-20 degrees. If you hike in a warmer climate, then, a zero-degree bag may be too warm.

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