The Dreamsack silk blanket, chollie, is not the same as the Dreamsack. The sleeping sack is plain silk, the blanket is silk noil.
If you've seen the extra-roomy sleep sack, the blanket is actually slimmer in circumference (even if the pillowcase and eyemask are inside) than the sack, and not quite twice as long. I've had a set in the navy color for years.
Yes, that silk noil blanket is warm. It's worth the money. The pillowcase exactly fits the new inflatable air-core pillow from Cocoon -13"x17"- (designsalt.com), a pillow which weighs about 6 ounces and stuffs into a sack the size of a soda can. I travel with the blanket, pillow, and pillowcase every time I go, domestic or not. In cold weather I add the Dreamsack sleep sack as well - if the power goes out or it's sleep on the floor time, I'm warm!
The one item I don't really care for is the silk eyemask, but then I've left another forum posting on the one I do pack (the Lights Out). If you don't mind a mask touching your eyelids, you'll like the silk one. It's light as air and blocks a good amount of light.
Two things to be aware of: first, this is not a blanket you can toss into your washer, dryer, and stuff into your bag in an hour start to finish. Yes, you can wash it, but since it's silk I'd recommend a lingerie bag for the washer. Use a good shampoo or actual silk wash, Wintersilks.com sells that (silk is an animal fiber, any commercial detergent will either run the colors or stiffen the fabric, and this includes Woolite - don't use that ever), tap in a little conditioner in the rinse cycle (I'm talking a tablespoon or so here, dissolve it in a quart of water before you pour it into an already-full of-water agitating rinse cycle), and then hang it to dry. Support it by placing it down a rod (a shower curtain raill with a towel over it is ideal), and make sure it hangs evenly. The foot pocket will sag; oh well.
The blanket may be a touch stiff once it dries if you have hard water, but you can either rub it between your hands or put it in a dryer with a couple of those dryerballs ON THE AIR SETTING ONLY! NO HEAT!!!!! 10 minutes ought to do it. No dryerballs? Three thick and fluffy DRY hand towels will do nicely. Tumble it only as long as it takes to soften it up, no longer. Keep an eye on it. Don't hang it in direct sunlight. Wet silk and sun don't mix.
Second, my navy blanket does seem to pick up grease spots like magic. Or maybe I'm just messy.
If you're driven mad by little darker spots on navy because you had *something* on your finger tips, get another color. Want to get those nut oil or creamer spots out? If you don't have time to wash, you can get travel packets of silk spot remover. Look either online or at a good men's store, they're used a lot for silk ties. Dreamsack and Wintersilks sell them too. Tide pen with bleach? IXNAY! Bleach will put a hole in your nice blanket. So you will have to pack a different stain remover if you can't abide any stains at all.
Hassle? For the incredible softness, warmth, and seriously small packability you'll get with this blanket, it's worth the time to take a little more care with it. In return you'll get a blanket one-sixth the size of the average fleece one, and you'll know where it's been.
Use the inflight blanket, pillow, and eyemask? Ewww. Surely you JEST.