I've owned this bag a few years and taken it on mainly summer trips, some with nighttime temps in the mid 30's. Always slept like a baby in it. Haven't had a cold night yet, but I've never really tested the limits. It's not the lightest bag for the rating, but it's reasonably priced, durable, and plenty roomy (I'm 5'11" 165lbs and I have the regular, although they probably change the cut every year). The synthetic fill is good insurance on rainy coastal trips.

I use this for all my colorado backpacking trips and I've slept warm every time I use it. It is the perfect bag for people like my who hike in colorado over the summer.

this bag should be called "the cats a@@! i have used this bag in temps down to freezing and i only had my boxers on. my wife is somewhat of a cold sleeper and she wears only light weight thermals to bed. would recommend this bag to anyone.

I have highly enjoyed the Cat's Meow for almost 2 years now. I bought synthetic to save $$$ and in case I was fool enough to get the bag wet while out in the wilderness. More specifically I decided on 20 degrees to keep the pack size down while keeping me warm to most temps I'd be out in, and if I were to go dead of winter 0deg F I'd probably just add merino longjohns and be set. I've been down to upper 20's low 30's and never even had to crank down the hood. I'm 6'1" and the fit on the Long was perfect.

Finally, I'm surprised someone who refers to a company as "Consistently over hyped, over priced outdoor poser shreck." would go ahead and purchase said company's product--but to each his own I guess. Perhaps the reviewer who was freezing his hind end off forgot to put a pad down--it's not going to matter what the temp rating on your bag if you don't lay down a pad. I don't buy simply for label, and certainly wouldn't on an item which is going to be in the tent 90% of the time anyway. I bought Northface for what I have felt have been consistent products without huge price tags. The Cat's Meow has worked well for me!

This sleeping bag is a pretty good bag but the only thing I didnt like about it was the shape of it. Im a bigger guy and it really makes you sleep in an awkward position because of how it is tapered in right at the hips. The bag does a great job of keeping you warm but I would recommend many other bags before this one especially if you want something a little more spacey

Perfect bag at a very fair price. You ever buy something and think the price is too high for the value? Well not this Cat’s Meow. I have been using this bag for over a year now and it performs perfect from the Sierras to the Andes, even in a pretty nasty hotel where there was no way I was climbing in between the sheets of the bed. Last spring I was caught out in a very cold 5 degree night, even with fleece top and bottoms on I felt the cold, part of the fun is having to suck some up once in awhile. A few other nights I experienced a low of 15 and I was fine, I do run a bit warm and I eat right before going to sleep. At around 40 degrees it does get a bit warm.
Overall this bag is comfortable, sturdy, well made, priced well, and does what it is supposed to do.

I have used this bag for two years and it has performed wonderfully. Great packability and comfort that are tough to rival. Plenty of room to move and no cold spots. What more can I say!

I have used this bag extensively and i really can't come up with anything bad to say about it. I have used it in dry cold weather, wet and warmer and wet and freezing. The bag does its best when you sleep like you should in a light polypro layer and nothing else. It really traps heat well. Honestly can't think of anything bad. Just enough room in the regular for a skinny 6'2" guy as well.

I've put over 200 days in this bag over the past 5 years (it was an older version). I've taken it on a month kayaking trip in SE Alaska, and its been on a two week backpacking trip in SE Utah, and those are just a few of the trips its been on. I've slept outside at 12,500 ft in Colorado in september, and i've actually been able to sleep. Mine has floated in water, and i still slept in it that night and i was able to sleep. It's still got a few more warm weather trips left in it, i just need something a bit more warm. Never ripped or tore. Pretty damn good for a hundred dollar bag.

Great bag for the money, it'll last you.

I've used this down to 35 degrees and its works pretty good. Drys out fairly quickly when wet. I've used it for everything from 35 degrees to 65 degrees and its held up pretty well over 30 nights or so of use. I always store it hanging or in its oversized loose nylon mesh bag. Insulation has held up well so far.

First off I am not a big fan of TNF brand gear since they got bought out by vanity fair. But, all that aside I was impressed by this bag. I took it on my month long NOLS trip to Baja where it performed really well. I slept with no tent or tarp, just on top of a sleeping pad and this did a good job of keeping me warm, (I know that you are thinking Baja can't get that cold) it got into the 30's some nights and this kept me toasty, except for when the winds really picked up. what impressed me most was the durability seeing as I was sleeping on sharp rocks and sea shells that sometimes would puncture my foam sleeping pad this bag never got a snag or tear. The stuff sack and mesh storage sack it comes with are nice touches. If you are an active sleeper I would recommend getting the expander wedge to go along with it.

This is a great bag that will keep you warm in most situations. I never had an issue and the bag compresses well. It's my go-to bag for camping on the East Coast and Europe.

Instead of using marmot helium in show/freezing rain tried this bag because of wet weather. Great construction, comfortable bag but not up to sub-freezing weather. ended up with everything in pack on to stay warm at 20 degrees. Like bag just won't use below 30...

Pros: Price, fairly light, packs to a reasonable size

Cons: might be a little tight

I bought this bag when I was on a budget try to outfit my self for a back packing trip on a budget. I haven't bought a replacement. Its a nice bag that Ive slept in just underwear down to around 30. I woke up in the morning and I could see my breath, was warm with the hood pulled. It is a bit tight on the sides though, but its not meant to be a king sized bed. I like it a lot but can't give it a 5. Bonus points for the mesh bag and compression sack included. I certainly feel like Im getting my moneys worth.

I have used a cats meow bag for 8+ years at temps below 20F (nothing below 0) and never had any problems with it. A little narrow at the bottom, though I have never used another bag, so I have point for comparison.

Well constructed. Warm, light, compact.

I tested mine on two cold nights, it was OK but not great down to 30F, and much too cold at 22F.
I am seeing insulation compression on the bottom after those 2 nights, so I seriously question the durability of the fill material.

I used it in 40 to 50 degree weather and it was warm. In fact, I couldn't find any vents which would have been great. It has also been durable so far.

The bag is of excellent quality, great materials and strong zippers. I used the pocket for my watch and mp3 player and mini LED flashlight.

I bought a right and left zipper versions so my wife and I could have the option to combine them.
I prefer a bag with a squarer foot box, so I opted to buy the Big Agnes Ripple Creek to replace this. Again, nothing wrong with this bag, it was just "too mummy" for me.
Now, my wife uses both bags and the dogs end up with her at night. The dogs give it a rating of: Two Paws Up!

I tested mine on 2 cold nights. It was adequate down to 30F, but not warm enough at 22F. I am also seeing insulation compression on the bottom after only 2 uses. Fill weight and pack volume are similar to competitors 30-35deg bags, and I guess it should be no surprise that it performs like one.

i have this bag for allmost 3 years ...
what can i say ?
i have been using this bag in the himalaya ,patagonia ,sinai in the desert ,israel and this bag kept me warm .
there some times i had to had some more layers on my body when it froze but on the other hand when i was in mid TEMP and i just need some cover i used it .

Great this s the bag for you. I think the reviewer that complained it's a 30 degree bag was being generous! I'd say more like 40 degrees. If you get it = you better get used to sleeping in your coat - oh yes and bring along a scarf and mitts to sleep in as well. What a scam calling this a 20 degree bag. Then again what do you expect from The North face? Consistently over hyped, over priced outdoor poser shreck.