Just to make sure, you do know that this bag comes with a compression sack already, correct? If you did want to get a granite gear sack, the large would work well with this bag, but with this bag costing $40, I'd just check out the compression sack it comes with before getting a compression sack that costs half the amount of the bag. Hope this helps!

If you're not backpacking, get the heaviest (most durable) compression sack that you can find. Don't worry about waterproofness, save your money. Think about the Granite Gear or Outdoor Research products. They're durable and inexpensive, BC has a few for around $25. If you plan on "risking" rain, then drop the extra 10 bucks and get a waterproof one like the Sea to Summit event stuff sack.

No, it will not. I'm 5' 11" as well and 240 lbs. Unfortunately, 5'11" is just a tiny bit short of what is tolerable in a standard sleeping bag. Add a little weight on that, and it becomes absolutely intolerable. You will definitely need an extra long bag and will sleep so much better each night.

I am a 5'11" female and ordered the regular bag since it said the max user height is 6'6". I was disappointed when I tried it out and was uncomfortable in the bag because I stretched completely from end to end. According to the advertised size, I should have had 7" to spare, but the bag was making my toes curl because it was too short. So I would definitely suggest you buy the long bag.

3 pounds 12 ounces for the regular, 4lb 6oz for the long.

It's just a regular stuff sack.Compression stuff sack is a different animal.

I love my Marmot Trestles 15 bag. I have the long extra wide size, and I can still get it down to a reasonable size for backpacking. Not the lightest bag I have, but definitely my go to bag, especially when the weather is questionable. This is one of the nicest and most economical bags I have come across, and it has stood up to pretty rough use (desert camping, sandy river trips, etc.)Pay the extra beans for down. You'll be able to pass it on to your grand children!

I would look at down bags, if you are in a reasonably dry climate, and they are within your price range. Almost any down bag with a comparable temperature rating will save you nearly two pounds per bag, and with two bags, carrying four pounds less will make a huge difference at the end of the day.You can easily do that but let her carry her own load! She'll appreciate the outdoor experience more.