Used as base layer for 90km gravel race in pouring rain and lower temperatures at higher elevations. With both slow sweaty climbs and fast cold descents this base layer effectively regulated my temperature.

Very comfortable, great fit & very warm

All set for winter!

I like to use Merino base layers as t-shirts as wool is awesome, nature’s hi-tech material, and the form fitting material show off my physique. ioMerino has good quality wool, but I’m not a fan of the fit of this shirt. The thumb holes, and thus longer sleeves, bunch up on my arms, which I could get past, but when I move around the shirt bunches up above my pecs and stays that way, unless I constantly pull it down. For reference, My body is similar to the model’s for this grey color. I have a preferred brand but they run out of stock often and I was looking for different colors. Unfortunately, this shirt will get relegated to sleepwear only. So, 3 stars for quality and construction, but not 4 or 5 stars for my purposes.

Nice, light and snug fitting, perfect as a base layer or to throw on over the top to keep you warm. Looks great, fits great, 100% happy with my purchase and already looking to add more merino to my running kit

Very warm & comfortable, happily purchase again

It has been a while since i brought any IO and putting this on reminded me it has been too long. Putting this on is like a nice warm hug - i know that sounds ridiculous. The thumb loops work really well with the Newton Gloves. I wish i had gotten them at the start of the Canberra winter as opposed to the end.

I use Altitude as a light weight base layer for cycling. It keeps me warm, but not hot even if i get it all sweaty. Initially I thought the the “glove” extension of the sleeve was a bit odd, but now in the cold weather I find it useful in keeping my hands warm. They fit easily under my cycling gloves, leaving no gaps.

Two new tops are providing me with continuous comfort and warmth while l work from home. No itchiness whatsoever. Multi wear between washing. The tops are a very solid base from which to start your clothing layering.

I purchased an Ultra Zip, an Altitude long sleeve crew and a skull cap. I am generally between Medium & Large. In these styles for me at least - Medium is plenty big enough. The Ultra Zip fancy enough to wear to the pub or out to tea, the Altitude tee does the job exactly as described. The skull cap is brilliant. Small, warm, thin - definitely an essential piece if kit for Autumn/Winter in Adelaide.

Short version is - more than happy - hoping for a good long life and will look to buy more. The Ultra fabric smoother - the Altitude "feels" tougher. Might go for Altitude when looking for warmth and robustness - Ultra when looking for style & comfort.

A solid 4 1/2 out of 5 stars and I am told I am not easy to please!!!!!

Cheers
Richo (Adelaide AU)

This is my third Merino top (I also have the leggings and neck warmer) and I LOVE THEM ALL. The feel and fit is great and spending 5 weeks in Norway and Sweden I wore IOMerino daily - its comfortable, kept me warm as I used it as layering. We did park runs and in the freezing cold and most times all I needed was the crew top (ditching a jacket before I ran and warming up in a few Ks). I now have no need to look elsewhere for my merino gear - this is THE BEST merino stuff I have worn - and I have been through alot of brands!

Love my tops!

What a great Piece of clothing , always know it's better to buy Australian !! better quality , supporting Australian. Not even itchy great work guys .Regards Les Hedger

Super comfortable and warm..24 hour delivery 😊

Very comfortable, warm and made in Fiji👍

Verrrry comfortable 👌

Fit, design, quality and service are all very highly recommended. Wear these as a base layer for cycling - everything you need - warmth, comfort and no odour. A must have!

This is my second altitude crew top. It looks and feels great. The colours are gorgeous too (boysenberry marle and port marle). I find this top perfect for casual wear, walking, computer cycling, hiking and camping. It looks good on it’s own and fits well under another layer. Great customer service too. The team were very quick and responsive resolving a wee issue.

The fit and material quality is great. This will be my go to first layer as it gets colder. I might have to get another!

My new favorite goto thermal, super warm and comfy!
Also a pleasure to deal with👍

I love the length of these tops there isn't a chance I'm going to end up with Plumbers Bum in IoMerino :)

I've brought a number of these now for Cycling and the fit and design is perfect !

another item in my merino collection, this company does everything right, very high quality clothing & realistic price. Love your work iMerino.

Love my new Altitude. Fits perfectly, nice and snug. Keeping me nice and warm on these cold mornings. Looking forward to testing it in more challenging conditions

Bought this for my husband: he wore in doing the 22 UTA course at dawn - he was very happy. Said it drew away the sweat but kept him warm. He wasn’t too hot. He plans to buy another and perhaps some summer stuff as well.

I wear my Altitude Crew as a base layer biking in cold New England winter weather. Keeps me warm, wicks sweat away and when I'm riding I just forget about it, which is the best thing I can say about a base layer. I'm comfortable, warm and not sweaty. The quality of the workmanship is excellent, and the thingies that fit around my thumb keep the sleeves pulled down over my wrists and inside my gloves so my wrists stay warm. Also, the sleeves are quite long, which is ideal for cyclists.

It's just as good as promised. It's warm when used as a baselayer, even in subzero temperatures, and I use it as a normal Tee when the weather is nice and it keeps me cool. It's as light as it gets, I recommend. Will probably order others some time.

Hi,, I have owned Merino years ago, then went for expensive synthetic, big mistake, now with a lot of brands of expensive Merino available its a difficult choice to get quality, comfort & value? I choose
IO-Merino after extensive research and I could not be happier & more satisfied with their products REALLY GREAT QUALITY clothing at a respectable price. Thank you so much IO-MERINO.

My family and I have recently returned from a months’ skiing in the USA. Whilst in Montana for 5 days early in the New Year, the temperatures were an unbelievable low of minus 38c with daily maximum of around minus 15c. I just wanted to express to you my appreciation of the quality of your ioMerino thermals. We were blown away with their superiority over other thermals we had (Kath and Ice), in particular the Chaser model, but the Altitude models also easily out-performed the Kath and Ice brands. Very impressive gear!

For the past 18 months, I've worn nothing but ioMerino gear for running. I've loved the fit and feel of Altitude tops and this latest selection is no exception. Love the look of the new colours, this particular green is my personal favourite.

For the past 18 months, I've worn nothing but ioMerino gear for running. I've loved the fit and feel of Altitude tops and this latest selection is no exception. Love the look of the new colours, this particular green is my personal favourite.