Nice material pants are designed great. Keeps you warm without overheating.

This top is thin, but not at all in a bad way. It doesn't have much bulk, but provides surprising warmth when layered. It breathes very well, and can be worn as a baselayer (or can easily be worn over a thin baselayer). It fits true-to-size, being neither too night nor baggy. It is on the long side, which I tend to like in my layering pieces. In general, I tend to run warm, and for this reason overheat when wearing any sort of fleece while inside. However, the Delta LT is thin enough (and breathes well enough) that I can wear it inside. However, if I throw a softshell over it and go outside, it provides as much warmth as my midweight (and much thicker) fleece pullovers. Oh yeah... and it is one of the softest pieces of clothing I own.

Arc'teryx does it again, making this my favorite lightweight fleece. It's soft and comfortable and the gusseted arms give you great mobility. It has great warmth for being so thin, so its great to take skiing, or backpacking when you need an extra layer for those cold nights.

SAME AS THE OTHER REVIEW! NOW THAT IT IS WARMING UP I CAN'T WEAR IT AS MUCH. SOMETIMES I WEAR IT TO BED, IT IS THAT SOFT AND COMFORTING.

I got one of these two months ago, and haven't taken it off since. I wear it just about every day, whether alone or under something a bit heavier. It is quite possibly the softest top I own, which is saying something. It fits pretty well, just like a t shirt. That makes it much easier to fit under another layer, as opposed to comparable shirts. Another thing that is really impressive about this shirt is the warmth. As a lot of other people have noted, it keeps me very warm. However, it also doesn't overheat. I live in MS, and the temperature swings during the day are unbelievable. I can put this on in the morning when it's low 40s, and keep it on in the afternoon when it's 60, no sweat. Very helpful. Only caution would be that this is a lightweight layer. By no means should it be used as an outer layer for any cold to speak of. It works well in a chill, but nothing more. Also, it runs pretty snug, so don't buy down. I'm 5'9", 150, and wear a small that fits pretty close. This should definitely be in everyone's closet. Worth the price, no question.

Although I prefer the Delta AR for mountain activities, the LT is a much cleaner piece that looks good enought to go out on the town in. As someone below said "uber soft" That pretty much says it. Clean design and excellent detail.

I usually where this as a midlayer. Honestly, when i first got it, I felt a bit ripped-off because it was light and thin. To my surprise, it is much, much warmer than it looks. I guess that is a thumbs-up to Polartec for the great fabric, and a high-five to Arc'teryx for making a midlayer that is technical for outside adventures, yet stylish enough for casual Fridays at work.

So comfortable and always a good layer add on. Usually just wear it alone on mild fall/spring days. I'm 6'4 230 and I wear the xxl as a pullover sweatshirt outerlayer and it's perfect

I have four of these and have bought them for my girlfiend too. Like everyone else we love them but I do wish it had a least a key pocket. I wear one almost everyday as a mid layer or top layer. They hold up great and while I wish they were cheaper I do feel they are good investment.

I have to be honest. I bought one of these on a whim. Backcountry had it on sale, and I've been an Arc'teryx fan for some time. I saw this, and although I didn't really need one, I bought it because of the great price. It is now one of my favorite 'go-to' pieces of gear. It gets stuffed into my backpack and toted all over the place ...

ridiculously soft.

My workplace can tend to get chilly, even in the summer. I keep this light weight fleece around and wear it as much as possible. It is very soft, comfortable and warm. It is the perfect light weight fleece. As others noted, its more of a mid than light weight fleece because of the superb material quality.

I will probably get another one. I have yet to find anything superior.

Fits well, all the right elements. Feels a bit crunchy in the front. Maybe they put some kind of wind slowing barrier on the front side? This detracts from the feel a bit but it may soften, I haven't had it for very long. Pocket zippers could use some kind of a pull.

Sleeves surprisingly long for an Arc'teryx product, way too long for me.

I own 4 of these puppies now (in various colors) and really love them. I’ve found the material and workmanship first rate-no small feat these days when it comes to clothing. The fleece itself breathes very well so I've had no problem wearing one of these hiking in AZ/UT during summer mornings. The cut of this particular model is a little longer than usual (the now difficult to find Delta Jersey is cut shorter) and at 6'4" it fits me better than any other 'non-tall' size shirt I’ve ever owned. At home (in MD) I wear one of them on almost any given day Oct-April. The rest of the year it’s usually too humid here for fleece, but in drier realms, you could probably get even more use from it. They wash and dry quickly and also make good pillows when camping. Wear it solo, or over a T-shirt.
Enjoy!

Uber soft, warm, and lightweight. What more could you ask for in a midlayer? I'm definitely a fan.

This will quickly become your favorite base layer fleece. I acquired one and soon bought another. Whether I am using this as a technical piece or just lounging around at home, this Arc’teryx pullover is never far away. Highly recommended.

I had lost this same fleece after wearing it most cold or cool days for almost a year. (Yes, I washed it!) Well worth the cost of replacing. Super light, durable, warm fleece.

I was expecting something a little more warm and sturdy, however I have not returned it. Turns out it's exceptionally warm, sturdy, and comfortable. The advertisement for being the "perfect layer under a softshell" had me imagining being able to match the warmth I have with my hardshell and Windstopper combo with a softshell and this mid-layer. That's not going to happen. Still, I probably wear this more than anything else I own. It's perfect for getting around in the morning or anytime you want something as warm as a sweater yet somehow lighter than a long-sleeve cotton shirt.

Very light fleece that works great for layering when doing aerobic workouts in cold weather. Looks great, too. I agree with others that the fit is really good with long tails and sleeves. Typical high Arc’teryx quality.

I wear this little fleece under a light shell for skiing and horseback (trail) riding. Terrific, comfortable fit, and very light. Completely disappears even under a slim-fitting soft shell. Surprisingly warm, but definitely add another layer or two for serious winter weather. It fits under most heavy fleece jackets. I also like carrying it around for spring and fall hiking, when a little extra warmth sometimes comes in handy. It fits easily even into a small backpack.

This is so light that you won't even know you're wearing it until you realize that you are not as cold as all of the people you are skiing with. perfect. buy it now.

That sums it up for me. So comfortable, practical, cozy, and warm that you will want to wear it everyday. Fits comfortably slim and makes me feel like I have a nice bod. My family who hadn't seen me in a while said I looked skinny... Well it was the shirt not really me losing weight? Would recommend to all...

Awesome fleece. Initially some of the fleece stuff started rolling off, but it doesnt have that problem anymore. Its extremely light for the warmth it provides.

This is the lightest, softest piece I own. Super versatile, it's great under an insulated jacket for resort days or over an ultralight layer under a soft shell for hiking. It kills it all the way to last call.

THIS TOP FROM ARCTERYX IS A TRUE WINNER WHEN IT COMES TO COMFORT. EXCELLENT OVER MY BASE LAYER ON NEXT TO SKIN. IF YOU ARE THINKING OF BUYING ONE THIS IS A MUST "GO FOR IT."

He is hard to find winter gear since he overheats easily and ends up shedding everything but his t-shirt. After he got his first one, over the next two years he bought two more. They are lightweight enough to wear when he is cutting wood and still warm when sitting by the campfire. The material is forgiving and breathes very well. If you are looking for heavy weight keep looking.

The Delta L Zip is the most versatile piece I have. It is scary how light and soft it is. I first got it when I was looking for a good thin and breathable insulating layer for my soft-shell (Gamma SV). It is the best. This thing rocks under a softshell or hardshell. Light, extremely breathable warm and is super, super soft. You just feel like there is a layer of warm around you, don't even notice the thing, it is so light. It is my most used piece of gear besides my shoes. I hope Arcteryx never stops making them.

I bought this pullover about a month ago and the only time I take it off is when I sleep. I'm going to have to buy a couple more in other colors so I don't look like I only own one shirt. Like other reviewers have pointed out, it's insanely warm for how thin it is. The inverse waffle pattern of the pile does wonders.

This fleece pullover is the softest outer garment you'll ever find. The fleece is super comfortable against the skin, and breathes very well. I've tried it in multiple situations, but prefer it as a base layer on mild spring days or summer mornings. The workmanship is unsurpassed, as most Arc'teryx pieces are. My only hesitation would be its durability. I've worn it quite a bit in the few months I've had it, and so far so good. Hopefully it will continue to hold up. My only regret is that I don't have about five more of them... just in case. The price is a little steep, but if you're willing to pay, this fleece won't disappoint.

So comfortable, perfect over a T-shirt for a cool day of climbing or hiking. Also great for just around the house, and surprisingly warm for its weight. It looks great too, this is my new favorite long-sleeve shirt.