Review: Therm-A-Rest Sleeping System

Kevin Kelly pointed me to the idea of ditching a sleeping bag for a tech blanket. He learned the tip from Ray Jardine, who extols the virtues of lightweight backpacking and camping in a series of books, including the recent Trail Life.

The basic premise is that the flattened bottom of a sleeping bag is wasted material, since you're compressing the insulation. A blanket can provide more warmth because it contours to your body rather than maintaining a bag or mummy shape. Plus, it's much easier to overheat if you're crashed out in a bag, as opposed to a blanket you can drape and quickly adjust throughout the night.

Ray sells his own quilt kits, which I'd love to try. For the recent BBG camp trip, I used Therm-A-Rest's $50 Tech Blanket (pictured). It is light to carry (1 lbs, 5 oz.), warm (quilted nylon exterior, polyester fill), and packs quick, easy and small (mine packed up smaller than the no-frills sleeping bag I have).

What's particularly smart about Therm-A-Rest's set up is that their Fitted Sheet ($21) and blanket have snaps positioned periodically lengthwise, allowing you to quickly attach and remove the blanket. Not a pain to set up, take down.

Better yet, it was far more comfortable than any sleeping back I've ever used. We were camping in mid-50sF, and I was never cold and never too warm. What's more, unlike a sleeping back you might unzip and find completely open by the morning, the Tech Blanket provided enough room on either side for me to turn over without disrupting the whole tent. If you were camping in warmer weather, I'd imagine un-snapping one button on either side in the middle of the night wouldn't be too difficult either.

Note: I used the blanket and sheet with Therm-A-Rest's $100 LuxuryCamp self-Inflating mattress and $28 Compressible Pillow. You don't have to go all-out and get either of these. My favorite makeshift pillow is a small fleece case a friend made and gave to me. You just fill it with your clothes, towel, etc.

The only thing you want to be sure of, is that you use a pad that's size/shape is comparable to the fitted sheet. Otherwise, you won't feel as snug.

The sheets come in medium, regular and large which are 20x66 in., 20x72 in. and 25x77 in., respectively. If you already have a sleep pad that size, you should go for it. Again, we're talking $21 for the sheet and $50 for a blanket that could also serve double duty at home. I'm in.