My wife purchased me this shirt (actually 2) to use running and mountain biking. They are awesome, incredibly comfortable, good at wicking sweat and best of all they never smell. We are located Ina hot area of Australia and even when I am literally wet and dripping with sweat after a ride or run the shirt smells clean. The same thing in a traditional running shirt or cycling Jersey and it not great to be in the same room as it. Amazing.

This is my second pair. I wear them throughout the colder months and they're fantastic! Unfortunately they're not offered in men's tall sizes for my 6'5" height, and the pants are easily 2-3 inches too short in length. I took the first pair to a seamstress and added 3" of black cotton material to get the length I needed, and you'd never know. The black cotton blends perfectly with the merino wool fabric. The first pair wore out and the extension easily transferred to the new pair. This isn't a problem because these are the BEST track pants and I highly recommend them!

these tights are so comfortable I don't want to take them off. In fact, I could sleep in them.
they provide the right amount of compression, giving me a slimmer look. pretty happy with that

Think I have put this on nearly every day since I've had it. Love it. I am happy I went down to a medium, a much looser fit than the altitude range. I love the raglan sleeve so I can fit my shoulders into it and have it fit nicely around my body as well.
I also am a big fan of the V neck, feels more relaxed without being baggy.

I find having a zip up high neck is the best in extreme cold to tuck a buff into or when it gets milder so you can unzip and cool down. I wear these trail running a lot in winter, (yes I have a few!) They all come on my snow trips for layers and get great wear as a casual top as well. Soft with a good amount of stretch, they are slightly on the small side even for a tight fit. If you're not sure or on the edge, go up a size. Worth every $

These altitude tights were a staple this snow season as thermals, and then became my favorite go to tights under a long jumper out and about. Wished they made these colours in chaser weight...

Hi, I bought a neck tube from you several years ago which is the best I ever had. it was really tight, and that is the only way to stay warm in the cold Norwegian winters... When this one was destroyed from over use I ordered several more, but they were all to wide, so they have no function:-( They just take up room in the drawer now. I really wish you could make the tight ones again, then I would for sure buy more.

I have my fair collection of arm sleeves in my run wardrobe and were keen to try these for - to be honest - the compression, the fabric, the everything - LOVE LOVE LOVE them.

What I do love about the sleeves is that 'mid' season, you can start with your arms covered, then as you warm up slip them down! Now to get you guys to make some STRIPY ones like the mongrel. Guaranteed these will run out the store.

I wore these hiking in Nepal and wore several shredded holes through the fabric of the inner thighs within a week

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.

I just love the Altitude top. Today I went to Mt Macedon and did 17km of trail running. It was near freezing and threatening snow, with a light drizzle. The Altitude top did an amazing job. It allows you to start warm and then when you heat up it keeps you at a steady level of warmth. I love putting it on and feeling the wool against my skin. It is my "go to" top to stay warm, in any conditions.

When it’s slightly milder I’ll go the Altitude T, but during Winter I’m a bit soft so will take the warmth of having a sleeve.The thumb loops help keep my hands warm if I’m going sans-gloves, and although the crew version of this top is awesome, I love being able to zip up or zip down as I get warmer or cooler. (I’ll also whack this one in my pack and pop it on over an Altitude T if it gets colder when I’m out and about.)

When my paddle turned into an "adventure" and I was still going in the dark in torrential rain with no jacket on - this thermal saved me from hypothermia - and it was really comfortable to paddle in - thanks!

Perfect thermal layer. Merino is simply the best material, and this one adds style and comfort too. My old synthetic thermals are getting biffed.

This is my go-to Rogaining top - good for layering and very comfortable!

I was always a toe-sock runner, but gave these a go and have been converted. Took these on a rugged trailrun, water, mud and plenty of hills and they are perfect. My feet feel great and they copped a punishment.

As a battler with more hair on my face than on my head, I really need some decent headwear for after a trailrun or throughout a hike. This cap is perfect all year round. Keeps the sun off in the warmer months, but also keeps my bald noggin warm in the winter.

I have to admit I was hesitant to purchase this singlet as I normally wear singlets that are quite fitting when I run and I knew this one was a little looser. But I have to say I absolutely love it. It is extremely comfortable!! It is really cool when I run on hot days but it was warm when I got caught in a rainstorm a little while ago!! I also think it looks great, especially when you wear a colourful crop underneath. I can highly recommend it!

I have been drooling over the Mongrel tops for some time and finally bought myself one. It was everything I had hoped for! Not only is it really warm, it has a long body and sleeves which is perfect for tall, lanky me, AND it is so good looking!!! I am pretty sure I will end up buying more of them just so I can have one in every colour :)

I am always hesitant about buying clothes online as I am quite tall and slim so often t-shirts are not long enough for me, or they are long enough but way too wide. But when my new altitude southern cross t-shirt arrived and I tried it on, I couldn't believe it! It fit absolutely perfectly!! Long enough in the body and the width and sleeve shape were a perfect fit. It automatically became my new favourite t-shirt. It is my go-to shirt when travelling. I wear it on the long plane trips as it is super comfortable and it doesn't smell!!! Even after 14 hours on a hot plane!!! I admit I will wear it multiple days in a row without washing it. Because I can! I highly, highly recomme

I am always hesitant about buying clothes online as I am quite tall and slim so often t-shirts are not long enough for me, or they are long enough but way too wide. But when my new altitude southern cross t-shirt arrived and I tried it on, I couldn't believe it! It fit absolutely perfectly!! Long enough in the body and the width and sleeve shape were a perfect fit. It automatically became my new favourite t-shirt. It is my go-to shirt when travelling. I wear it on the long plane trips as it is super comfortable and it doesn't smell!!! Even after 14 hours on a hot plane!!! I admit I will wear it multiple days in a row without washing it. Because I can! I highly, highly recomme

These socks are so comfy and warm! I cycle a lot, both on the road and on the trails and these are my favourite socks for on the bike. My partner has a pair too and he loves them as well. He tries to steal mine when his are dirty but I fiercely defend them!! I can highly recommend these socks! :)

I am always hesitant about buying clothes online as I am quite tall and slim so often t-shirts are not long enough for me, or they are long enough but way too wide. But when my new altitude southern cross t-shirt arrived and I tried it on, I couldn't believe it! It fit absolutely perfectly!! Long enough in the body and the width and sleeve shape were a perfect fit. It automatically became my new favourite t-shirt. It is my go-to shirt when travelling. I wear it on the long plane trips as it is super comfortable and it doesn't smell!!! Even after 14 hours on a hot plane!!! I admit I will wear it multiple days in a row without washing it. Because I can! I highly, highly recomme