High-Performance Merino Wool Base Layers for the Trails, Camping and Hiking

These fitted well and stayed in place. I haven't washed them yet so can't comment on that, but otherwise I am happy!

I would highly recommend these socks , well worth the cost.

Only downside to this is there is only one colour in it!! Please do some more colours. I’d buy them all!!

Love everything imerino!
So happy with this and I’m super comfy on the early morning chilly winter runs! Need to get more!

Lovely to wear, comfy and warm. Good fit. Thank you.

I have 2 of these tops now. Both on high rotation for winter training. Looks neat too so can wear them after training.

Love these tights for pre-dawn Winter runs. No more sweat drying & getting cold. I’m a size 8-10 so got the extra small. Perfect fit & very comfortable around the waist.

Hands down more comfy than Bonds, who have the claim that their undies are comfy undies.

I purchase to replace a fleece neck gaiter that I have used skiing for years.lighter, warmer, less weight and bulk.
money well spent. Stays on my face because it is light and not tight. That makes it very comfortable.

Soft, very light and warmer than a fleece. Just not bulky like other fabrics of the same warmth.
The thumb holes are great but dont get in the way if you dont use them.
I wear this with a merino base layer and a shell jacket and am very warm with no bulk.

To be honest, I'm a bit of iO Merino devotee. I still have my first purchase from many moons ago and the products never disappoint. The Altitude Tee is the perfect base layer for when the long sleeve option is just a little too warm, or you want to keep your arms bare. It is perfect on hot summer days as it breathes so well and never gets stinky. I wear it around the house all year round and it does the job really well. It is super smooth next to my skin and the Small size fits me like a glove (167cm, 70kgs) - well done team!

Superb purchase! Been looking for a good, authentic verified Merino top that will perform and I am greatly happy with what I bought. Will need to get another one.

Great base layer for hiking. Tried a lot of different brands of pure merino and always found that they were itchy. Have worn the Ultra Zip several times now in wet weather conditions and it's very comfy, no itch. Would purchase again for sure.

I bought my first Mongrel top last winter and fell in love with it. Its like a warm second skin when out hiking and running on trails all day especially after a beautiful frosty morning. Its so comfy when running, so warm yet thin enough to layer till the frost melts.. So much so I bought another one. I hope these remain.

This merino beanie is amazing. I have never found a comfortable beanie that doesn’t make me sweat and overheat. Highly recommend this.

Perfect for cold morning exercise and lounge wear :-). So warm & comfortable. I’m size 12 & purchased the Medium. Perfect fit.

Absolutely in love with the Mongrel! Everything about it is just perfect. I have never been able to wear merino before and tried this as I just loved the style and for the first time, no itchiness. I’ve since been back online and purchased more products. Just amazing out on the trails running and on the mountain bike too, plus it looks great! Highly recommend!

I love these tops so much that I now have 3. I run on the Blue Mountains, NSW, and they are perfect for the cold weather. Keeps me warm without getting too hot.

These tights are amazing, so warm and comfortable. I'm not sure what I was thinking waiting so long to buy them, now I have three pairs :) LOVE, LOVE LOVE them

So comfortable to wear. Have run in -1c and top is warm and soft

Everyone needs a bit of Mongrel to help them when out in those cold, wet and woolly conditions.
Without it you're day will be very miserable but instead you'll just be keep going strong when wearing the ioMerino Mongrel. Plus as an extra bonus, it just looks so damn good

Fantastic product, extremely soft and comfortable. Absolutely love it

Service and delivery was just as outstanding as the product itself.

Bought these items on recommendation from some of my running/cycling friends. I certainly wasn’t disappointed and they feel so warm, cosy and comfortable to wear. Not only are these items very functional but stylish too. I usually wear XS which I bought and the size is perfect. Highly recommend

I actually have a few long sleeve merinos but this is my first ultra one with the zip. It is my new favourite!! The fit is slightly looser than the altitude tops which is super comfy, and the higher neck with zip means my neck does not get cold. The sleeves are also nice and long and come with that thing that is so much in demand for us tall people - thumb loops!! Yay! Love this top and would happily buy another one.

I had been eyeing these off for quite a while before I bought them. But I am so glad I finally did!! They were everything I was hoping they'd be. Much warmer than my normal tights but still not too hot when you are hiking up a big hill! At first I wasn't keen on the high waist as I usually don't like stuff around my tummy, but now I love that feature. It keeps that area nice and warm and cosy. But as with all my merino, my favourite aspect is that it doesn't smell. So I can wear it multiple times without washing. Which is incredibly handy for my 20 minute winter lunch walks while working from home. Love these tights and so glad I finally bought them!!

Perfect fit and beautifully soft on my skin.

Soft and warm, I use this as a headband and it keeps my ears warm but not hot, and I even wear it to bed when it's extra cold. Will be stocking up on these!

I bought 2 different style beanies and they are awesome! Great service Thank you for our beautiful Australian Wool beanies

I own ‘a lot’ of high end (& damn expensive) compression leggings as I lift weights regularly. These are EXCELLENT leggings in every way.
They are soft, breathable, temperature regulating, firm fitting yet not pinching at the waist, flexible and squat proof.

I will be wearing these as my every day leggings due to the high waist and comfort factor.
I wear my jeans stretch and tight fitting and am a size AU10 with solid legs and a regular waist and the size Medium fit like a glove. I will absolutely be buying additional pairs.

I have had these tights for approx 2 months now and can not fault them!! Absolutely the most comfortable well fitting tights I have ever owned. Sizing is spot on as well.

The tank top works on its own or, in the cooler Tasmanian weather, under a long sleeve top when you don't want two sets of sleeves.

I have 2 pairs on rotation. They are the best fit and most comfortable track pant I’ve ever owned. The cut and fit are perfect. They wash up really well too.

Loved this top from the moment it arrived. Soft and comfy - my go-to when changing out of the work wear at the end of the day. It's also been my outer running top for cold mornings, then gets tied around my waist once I'm warmed up. Love the fact it can see a lot of wear between washes, and it's held its shape well.

I've just received two more of these after wearing my first two almost every day, winter and summer... so good! So comfy, they fit well and wash and wear well. I'll keep buying these over and over again.

I use these for cycling on cold mornings and find them just right. I like to stop and take photos along the way and I was able to handle both the phone camera and camera pretty well, leaving the gloves on. Lightweight but warm enough. Really happy.

I bought this on a bit of a whim, not sure what to expect. I am a 12/14 so bought the L and it is snug. But fits perfectly. When I buy zip tops in the Altitude range for layering over a base, I will size up. The top is gorgeous though. The fabric quite silky and smooth, and the seams also smooth. As a first time buyer, I am so impressed that such good quality Merino active wear is available in this price range. And I get to buy local which is fantastic. Delivery was easy and quick, given I live regionally and we have issues with postal services due the pandemic. Very happy.

To be honest I think I may need this hoodie surgically removed as it is so comfortable and warm on the cold evenings and mornings! The fleece quality is excellent and the fit good. I love it. I really do. So impressed with the quality.

The best leggings I have ever had (and Ive had lots!). They are so comfortable and light but still warm. Really soft and I love the waist band. These will be my go to from now on :)

Super comfortable, great fit perfect temperature control like all ioMerino.
Once you start to wear ioMerino you can’t wear anything else, it’s that good!

I only ever run / ride in wool socks now. This pair is good for on the bike when you need a little extra warmth

I just love these briefs. Perfect for running and everyday wear. I will gradually replace all my undies with these

I have one of these already which I wear as a neck warmer and now a head scarf to help my bad lockdown hair days. Bought a couple more for some colour diversity in my zoom calls :)

Feels great! Easy wash & wear. Just a great base layer for pretty much everything....cycling, hiking or just day to day as a layer of warmth.

This jacket is magnificently warm. The knitted finish on the outside hides a wonderfully soft interior. The pockets are roomy and the zip up front and hoodie tie allow you to secure the front of the jacket and dash off into the chilly morning. As you warm up, the zip allows you to circulate air to your body, and of course, it whips off easily when you need to remove it mid-run, and tie it around your waist to complete the run. This is a great jacket and I would strongly recommend it.

Put these socks on for the first time and I heard my feet heave a sigh of relief! I have been given them a hammering wearing them day in and day out but cannot get them to stink up!!J ust loving the feeling of wool on my tootsies!!

Every item I buy from iomerino I wonder how I did without. The socks-amazing!! The long sleeved tops-fanbloomintastic!! The service-brilliant. Do not hesitate to buy these products. They are second to none!!!

Extremely happy with the zippered long sleeved shirt - so light and warm and well made - will be getting another !!

I've been riding in merino jerseys for several years. These are the best I've worn yet. Super comfy, xlnt fit (I'm 180cm and 73kg, size M), very warm, and no stench.