Brass Monkeys100% Pure Merino Wool - Long Sleeve Base Layer - New Zealand Made - Warm Mens Thermal Top - Perfect for Outdoor Sports - Black

Fits beautifully, no chaffing, nice and cosy even during the very chilly English weather during January February and March. Like the boxers and short sleeved undershirt I bought at the same time it wicks moisture very effectively and does not leave you feeling wet even when on a recovery section. Cant recommend them highly enough.The long sleeve undershirt has been my fave wear during the very cold weather, along with the boxers it has served extremely well and made taking that first stop out of the door much easier on some cold days!Not cheap but exactly right to do the job I needed doing, as a generally very moist runner who had previously felt the chill if I stopped or slowed these keep me warm even when they are wicking hard! Merino underarmour were recommended on twitter #runchat by other runners to my specific problem of being a runner who got very very wet on runs and really needed something to help make running in the cold months easier, so that I wasnt heating up running then cooling very quickly, being wet, when recovering. these make winter running much more comfy!I bought a spare short sleeved undershirt and boxers at the same time (having been given another short sleeve undershirt shirt for Christmas) and they have done superb service during the winter. I can see that in early Autumn the short sleeves will come into thier own. Its now (late March) getting a little too warm for the undershirts but the boxers are still perfect!

I am really impressed by this. I’ve just worn it on a pretty fast and long walk, and it worked brilliantly without a midlayer. I didn’t get sweaty at all, even though I was walking fast and was toasty warm.It fits me really well. I’m usually between a small and medium, and this medium is quite close-fitting, so, if in doubt, size up. I’m very pleased that the arms are not too long. Very often with merino baselayers, the arms are too long, but as other reviewers have said, the arms on this are not too long. Of course, that means that if you’ve got low arms, you shouldn’t get this top!Very impressive piece of kit!

For context, I got a large an I'm 174cm, 73kgs, 41" chest, 32" waist.Seems well made and compared to an Icebreaker 175 (which feels like you have to treat it with pincers), its a tank.The fit, is on the tighter end. The body fit is fitted which was ok. It is ample long enough, but as it doesn't flare out at the waist, if you have any kind of a backside you do feel its tightening a bit.The bigger issue is the arms and especially the forearms. I'm not Popeye, but whilst my upper arms are ok, the forearms are pretty snug, bordering on the tight. Maybe Im just too 'buff' and never realised :) .

Lightweight, comfortable and warm. Worth every penny!

Absolutely love this product! I wasn't sure what to expect as I did not know the brand, but this was one of those instances where as a buyer I just feel I got lucky and walked away with something amazing. I am a runner and use this product for outdoor training and it is incredible!. Most ''merino'' thermal base layers you find online are actually a blend of Merino and part synthetic material to keep price down, but Brass Monkeys is 100% Merino and is very well made too. The difference with a part-synthetic alternative is just incredible. The product fit is excellent and the comfort is incredible. Zero itchiness, zero chafing, it gives a climate-controlled workout. Top marks for comfort and also for quality. I believe they are relatively new to UK, but do yourself a favour and buy this. You will not find better price/quality. I would definitely buy again.

Not cheap but very good garment good fit, very warm, not disappointed

Dispatched and arrived in a matter of days. Really good well made garment that definitely works when used as a base layer. Layered it with a couple of other layers and then my coat and never felt a thing in minus 12 cold snap. Could if you wanted just wear it as a top as it looks good and fits very well. I am 6 ft tall and slim athletic build and the small fits me like a glove. Merino is definitely the way to go for layering and would definitely recommend this garment and product.

garment medium size 38-40" chest definitely has short arm length for taller people, the tight cuff (which should be a benefit for this item) , lets you feel this short arm length by sitting higher on the arm, tighter than it should, which would feel different to you when worn.In use for cycling, with stretched out arms , the shorter arm length surprisingly was not felt and the extra 210 merino weight came into its own on a 5 degrees ride,, feeling the garment you could feel the trapped heat within the garment, this benefit outweighed the arm issue which might even have reduced cold air flow up arms. This garment is a tighter fit for 40" chest, (designed this way), I hope it does not shrink when washed, It does not itch, feels great, neck issue raised by some is there, it sometimes just does always sit the same as other quality base layers, pulling down front seems to fix neckline, medium chest persons do not normally have body builders neck. although the neck size is ok,with the short arms I immediately ordered the always long armed medium Rohan 150 merino base layer at the same price, this product was 40% polyester and comparison of products showed the brass monkey bass layer would always be considerably warmer, Concluding, this amazon purchase has worked out with the the perfect result, The longer arms of the Rohan (not cuffed), and its more relaxed fit at medium size, gives me the combination of of 360 grams of merino base layer when worn together, the sizing and cuffs of both garments acting perfectly together, roll on that colder weather

Endlich ein Merino Produkt das selbst bei solchen Prinzessinnen wie mir nicht kratzt !

Lightweight, comfortable and very warm. Great value

This is a great thermal that fot exactly as expected. It is very comfortable and verg well made. Great product from New Zealand.

Better than another well known brand, it has the larger size option.

Bought as a set with the pants. This is going to be my secret weapon to battle the freezing cold on Korea