Anyone who's camped in the cold weather knows the importance of a warm sleeping bag. If you're looking to amplify that comfort, check out Grabber's Sleeping Bag Warmer, a portable heat source that will keep bags toasty for more than 12 hours.

Anyone who's camped in the cold weather knows the importance of a warm sleeping bag. If you're looking to amplify that comfort, check out Grabber's Sleeping Bag Warmer, a portable heat source that will keep bags toasty for more than 12 hours.

The sleeping bag warmer includes a nonflammable warmer in a soft fleece holder. The warmer is air-activated, reaching full warmth in about 30 minutes.

And you don't have to worry about a bunch of scary chemicals near your body. The warmer is nontoxic, made from all-natural materials, including iron, water, cellulose, vermiculite, activated carbon, salt and air.

Activating it is easy; just open the package and shake. It reaches a maximum temperature of 166 degrees and an average temperature of 135 degrees. The warmer can be paused by storing it in an air-tight, resealable bag.

Its pouch is reusable and includes one warmer, which is disposable and can be replaced.

The unit has other uses as well: Keep it in your pocket for extra warmth or use it as a heating pad for pain relief. The pouch measures 5 inches by 9 inches. The warmer measures 4 inches by 5 inches.

Purchase online at www.warmers.com. The price for one sleeping bag warmer is $4.49.