Sierra Designs might be best known for their camping tents, but their sleeping bags are just as good. Sierra Designs sleeping bags are known for its warmth, lightness, durability, and comfort. These are some of the best sleeping bags available.

Sierra Designs constant research allows them to produce some of the best sleeping bags. Using technology like FLEX and fabrics like Cocona, they are able to create a comfortable sleeping bag. Sierra Designs recognized that sleeping bags aren't a one size fit all products, so they produce sleeping bags designed specifically for men, women, and the youth. They even produce special sleeping bags using the FLEX technology.

Depending on which sleeping bag you purchase, the fill material will consist of Goose Down, PrimaLoft, and Climashield. PrimaLoft and Climashield are synthetic materials. PrimaLoft is an earth friendly insulation developed from recycled plastic soda and water bottles to create Eco spun fibers. PrimaLoft insulation is durable, weather resistance, lightweight, and soft to the touch. Climashield is a soft, highly resilient, continuous filament insulation made from reclaimed materials. Goose down is a natural renewable insulation that provides a higher "warmth to warmth" ration with a longer life span. Goose down is great for times when there is no chance of getting wet. Goose down loses its insulation qualities when wet and takes longer to dry.

As mentioned earlier, Sierra Designs produces some sleeping bags using the FLEX technology. What exactly is the FLEX technology? A sleeping bag with the FLEX technology has less constriction allowing the sleeping bag to be more comfortable and the sleeping bag adapts to your shape to increase thermal efficiency. Elastic binding tape is used on all FLEX sleeping bags.

Some of the more popular Sierra Designs sleeping bags are the Arrow Rock, Echo, Nitro, Trade Wind, and Wicked Light. All of these sleeping bags will keep you nice and warm during the nighttime.

The Arrow Rock sleeping bags are available in three ratings; 15 degrees, 30 Degrees, and 45 degrees. All of the Arrow Rock sleeping bags feature 600 fill goose down, chest pockets, ergonomic hood, ergonomic shaped foot box, FLEX technology, and snag free zipper tracks. The shell is made out of 30D polyester and the liner material is made out of 40D polyester.

The Echo sleeping bags are available in two ratings; -20 degrees, and 0 degrees. Both of the Echo sleeping bags feature 800 fill goose down, chest pockets, expedition jacket hood, tricot lined foot box, FLEX technology, snag free zipper tracks, and DriZone waterproof/breathable fabric. In addition to those features, the Echo sleeping bags feature the Funk Off anti-bacterial liner. Simply turn he bag inside out, place it in the sun, and the dirt and oils break down of a cleaner, fresher sleeping bag. The shell is made out of the DriZone material and the liner material is made out of 50D polyester.

The Nitro sleeping bags are available in two ratings; 15 degrees, and 30 Degrees. Both of the Nitro sleeping bags feature 800 fill goose down, ergonomically shaped foot box, jacket hood, partial FLEX technology, and snag free zipper tracks. The shell and liner are made out of 22D polyester.

The Trade Wind sleeping bags are available in two ratings; 15 degrees, and 30 Degrees. Both of the Trade Wind sleeping bags feature 600 fill goose down, ergonomic hood, ergonomic shaped foot box, draft tube, and snag free zipper tracks. The shell is made out of DriZone waterproof/breathable material and the liner material is made out of 40D polyester. The Trade Wind sleeping bag was awarded the "Gear of the Year" award in 2006.

The Wicked Light sleeping bag is available in a 45 degree rating. The Wicked Light sleeping bag features 800 fill goose down, continuous baffle construction, removable pad locks, semi rectangular shape, and snag free zipper tracks. The shell and liner are made out of 22D polyester.

Sierra Designs has been given several awards for their sleeping bags. If you are looking for one of the best sleeping bags that's going to keep you warm for the entire night, make sure you buy a Sierra Design sleeping bag from your local camping gear store.

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