Worth it! No need to feel sticky or lather some bug spray or worry about your tent burning down from a citronella candle. Also just works as a light blanket for those warmer nights. No scent. Easy to care for.

Lightweight. Easy to pack. Comfortable to sleep in.

This sleeping bag liner is very lightweight and packs down small. I'm not a long-distance hiker but know that every ounce counts. I don't think this will add much weight to the pack. I typically car camp/overland and use a blanket as I find sleeping bags too confining. I knew this was a bag liner when I got it but was hoping the slit for the top and bottom was bigger so it would be easy to slide into it. It's not. Each time I've used the liner, I thought I was going to tear it apart when I got in and out of it. I also thought I was going to tear it when I tossed and turned while trying to fall asleep. It's not the quality of the liner which seems very good. It's just that it is very lightweight and I'm not using it as intended. I think it would be fine in a sleeping bag like it's designed for. As I usually sleep in my vehicle, generally bugs aren't a big concern so I cannot say on how well it repels bugs. As it's not extremely humid in Arizona, I can't tell if the Coolmax fabric removed moisture away from me. Overall, it seems like it is good quality and I'll try it again in the fall as I got an oversized sleeping bag to try out.

I have used a silk liner for 15 plus yearsI make it into a gown by cutting arm holes and a head holeThis one comes that way and the material is better than silk it stretches does not make you sweat

For all the fancy tech used to make this product a plain silk sheet soaked in permethrin is better. The fact that the bottom portion is open is good but in practice it's very much the same as the closed bottom. You still have to remove it or slide it up to be able to move, the part that makes this cumbersome is that the amount of space for you to be able to do that is limited by the length of draw cord they put on the bottom. I do not have broad shoulders but I had trouble slipping this down and up because it's so constrictive from the bottom opening. I put it on and tried to raise it up to use the restroom that was cumbersome. I also tried taking it off and putting it on like a t shirt that was also difficult for me to do. The size of the openings must be bigger and the draw string longer to make it easier for bigger people to be able to use it without trouble.The other reason I took a star, bugs love openings. If there is an opening bugs will find a way in, it's what they do. The insect repellent treatment will not have the same repellency strength through the duration of the life of this product so it will be up to the user to monitor if it is still functioning adequately. In-between the person noticing the loss of effectiveness and treating the liner with permethrin there is a chance for bugs to take a bite. In my use case I was purchasing this to sleep in the tropics but my friend advised me to buy the closed version to prevent bugs from coming inside. Perhaps someone with a different use case would benefit from this product.Finally the fabric used to make this product feels more like the one used in the reactor instead of the one used in the adaptor line of their sleeping liners. In my experience it ran hotter than using plain cotton sheets soaked in perimetherin alone.

I like these liners and they are definitely nice and useful. However they are of a strange design that I'm still trying to get use to an figure out the best way to use them. I actually decided to get and test two of them. I have the standard Breeze liner in the compact mummy size and I have the Breeze liner with Insect Shield in the standard mummy size. The only difference between the two is of course the insect repellent part and the regular sized one is a little longer than the compact. Other than that they are pretty much identical. They are also both the same in width. The quality and construction seem to be top notch as with most Sea to Summit gear. At only 5'6" I can easily and comfortably fit inside both with no problem and with plenty of extra foot room. They are both also very soft and comfortable against your skin.They serve many purposes. For one they are great for helping to keep your sleeping bag clean. They are much easier to wash and can be washed more frequently than the whole bag itself. They can also be used on hot summer nights as a stand alone sleeping bag. Which should really appeal to the ultralight hiking crowd. They also help wick away sweat and keep your bag from sticking to you on hot nights when you do use them as a liner inside your sleeping bag. Because of the arm holes you can also actually wear this liner around camp on cool mornings or nights. However, you will look a little funny like you are wearing an extra long nightgown with a hood around camp!The part that is a little strange to me and that I'm still working on how I want to use it, is the whole arm hole thing. These liners actually have optional arm holes which I have never seen on any other bag liner. They have snap buttons that you can snap together above each shoulder to create the arm holes. The idea seems pretty ok and should help keep the liner in place, but it also makes it move with you when you roll over in your bag. Also your arms aren't being covered by the liner when using the arm holes. However you can also choose to not snap it together and just use it like a typical liner. I have tried it both ways. I definitely like using it the standard liner way because that's what I'm use to. However the arm hole way didn't seem too bad either, at least when used with my sleeping bag, but I still need more time before I make up my mind on that. The only thing I noticed is that sometimes when rolling over the upper part went with me, but the lower part would twist around my legs and I would have to work it around in the bag a little bit. It wasn't an extreme twist and didn't happen every time though.When it comes to the Insect Shield part, I don't know how to test that in depth. However, I can say that on the two nights that I used the Insect Shield liner the skeeters most definitely were out, and I didn't notice any bug problems at all throughout the night. So it seems like it works pretty well.As far as which one to get I look at it like this. Sea to Summit is known as an infamously expensive brand in the outdoors community. They are kinda thought of as a bougie, hippy, boutique brand. My point is if you can afford anything from Sea to Summit to begin with then you can probably afford the only 10 extra dollars that the Insect Shield liner cost. So you might as well get that one so you have that extra layer of protection from bugs. If you live where bugs aren't really an issue then of course you can go with the regular one and save the $10 for other gear.I personally am very happy I had an opportunity to get the liners through the Vine program. I very much like them overall and will definitely use them. However I personally would never spend $70 plus on any thin summer liner from any brand. A nice winter liner maybe, but not a thin summer one. If you are someone who can afford it and doesn't mind spending that much though, then I would definitely recommend giving one of these Breeze liners a try. They are definitely a nice bag liner.