Sleeping bags – 3 myths and 3 tips

In this post I will bust 3 myths and share 3 tips regarding sleeping bags

Myth #1: Down is a good insulator in wet and humid conditions.

This is the biggest myth about down. Down has excellent “dry” thermal efficiency performance but in wet and humid conditions down starts clumping and the sleeping bag loses its loft. When down loses its loft, it loses some, or all, of its insulative ability. This is the reason the USA Military removed down products from its high performance gear.

Have you ever camped in continuous rainfall or snowfall? In these conditions it is difficult to properly ventilate your tent and everything inside the tent gets wet due to condensation, including your down sleeping bag. Once the down bags gets wet, it’s very difficult to dry it until the sun comes out. It’s a miserable situation.

Tip #1: Look for bag with synthetic insulation such as Climashield APEX.

Climashield insulation maintains thermal efficiency in wet and humid conditions. Unlike down, it doesn’t clump when it gets wet. And the polyester fibers dry out very quickly.

Climashield insulation is made from continuous strands of fiber which makes it exceptionally durable. The products require minimal to no quilting and can be laundered repeatedly with no deterioration in insulative performance.

APEX is best version of Climashield and the APEX bags are very lightweight, warm and compact.  A 25F bag will weigh 23oz/650g and packs down to 14in x 6in. A 10F bag will weigh 30oz/860g and packs down to 14in x 8in.

Myth #2: Mummy style bags are comfortable and efficient.

The problem with a mummy bag is that it is difficult to sleep in any position other than on your back. The design restricts freedom of movement and therefore many users don’t find it comfortable. They design is also inefficient as part of the sleeping bag is compressed under you has little or no loft and therefore that part has no insulative value. It’s simply wasted. Mummy bags are difficult to ventilate in warmer conditions which means you may end up sweating.

Tip #2: Try a quilt.

Quilts are a cross between mummy bags and blankets. By cutting off the wasted back side of mummy bag,  quilts are lighter and less bulky to carry. And they offer the user more freedom to sleep in any position. They offer variable warmth – you can ventilate in warmer conditions and seal it colder conditions. 

Myth #3: Quilts don’t work in cold weather.

I think this is the biggest myth about quilt. A well designed quilt can be as warm as a mummy bag. In fact quilts have been used at some of the coldest places on earth, such as the South Pole, Vinson, Greenland, Aconcagua, Troll Wall, Mount Eiger in the winter, and the Himalayas.

One reason this myth persists is that most quilts are not designed properly to deal with cold drafts and don’t insulate the head at all. 

Tip #3: Quilts that work in cold, wet and humid conditions.

Blue Bolt makes high performance quilts that are designed and tested to work in cold, wet and humid conditions. Made from Climashield Apex insulation, with a wide girth, draft stoppers, a 3D sewn footbox and complete head insulation, they offer maximum thermal efficiency at minimum weight.

You can try it today with a risk-free 60-day trial period. If the quilt doesn’t work for you, you can return it and get a full refund.

Thank you to J. C. for taking the time to correct our grammar errors and making this post more comprehensible.



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