Ultra V Neck Tee - Big Heart Adventures

Fabric Guide

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The Ultra V Neck T-Shirt has all the same features as the Ultra Crew Neck Tee and combines all the natural benefits of our finest MicroMerino® fabrics with just enough nylon to create our most durable fabric ever. It's as soft and comfortable as ever, yet tough enough to withstand the most demanding adventures.

Designed with Ultra Runners in mind we made it extra comfortable and extra durable. The sporty fit is streamlined, but not ‘contact fit’ like the Altitude Base Layer Range. 

A true high-performance garment packed with extra performance features like tag-free labels and flatlock stitching that eliminates chafing and maximize comfort, and the reflective trims have been added for extra safety in low light.

Print to order. Exclusive Big Heart Adventures limited edition print.  

Designed with a body-skimming, sports fit.

True to size. 

Made with lightweight 83% superfine Australian Merino Wool, 12% Nylon for durability and 5% Elastane for an easy four-way stretch and freedom of movement.

Lightweight 160gsm

83% superfine Australian Merino Wool

12% Nylon for extra durability

5% Elastane for an easy all-way stretch



Customer Reviews

Based on 6 reviews
Emilie (Sydney, AU)
Soooo comfy

Very flattering and comfortable.

Kim-Lyvonne Saboe (Darlinghurst, AU)
Excellent quality,super light...

Very comfortable, purchased this as I wanted a high quality Merino T shirt for everyday. (not for sporty activities) It looks great. I sized up for a more casual feel and I am very happy with it. i have purchased more. Tested it out with a wash and there was zero shrinkage and it looks exactly the same as when I took it out of the packet

miyuu (Brunswick East, AU)
Lightweight feel, soft and very comfortable.

love the Ultra V-neck T-shirt. Ultra fine lightweight merino is exactly what i was looking for. It's fast drying time and warmth is perfect for winter wear in Sydney. i now have 5; one for every weekday.
I would really like to see more colour choices, that way i can buy even more!

Marcia Stinson (Sydney, AU)
Ultra V neck

Best shirt to run/walk/hike in ! super comfy in hot or cold weather

Zoe (Adelaide, AU)

Comfortable, good fit and heard wearing

Glad to hear Zoe, you'll be sure to get lots of wear out of it from now on.

Super comfortable

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.


Fabric Guide

While Merino is an amazing natural fibre, not all Merino fabrics are created equal. At ioMerino, we make our own fabrics, using only the best quality fibres, and to very specific specifications that make the most of the natural benefits of Merino. All of them are 'Merino rich’. No cheap blends passed off as Merino. No cheaper scratchy fibres or synthetic substitutes to save money. No unethical production. And each fabric is made for a specific purpose. So if you see something with a small amount of elastase or nylon added, you can be sure it absolutely needs to be there to enhance the natural stretch and durability. 

It took every bit of our 140 years of experience in the wool industry to perfect our fabrics, but we think you’ll agree the end result was more than worth the effort.

Ethically Made. Ethically Sourced. Perfectly Natural. 


Altitude / Zodiac

Lightweight 170gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Ultra / Universal

Lightweight 160gsm 83% Australian Merino Wool blended with 12% nylon blended for extra durability and 5% Elastane for stretch and comfort.



Midweight 265gsm 96% Australian Merino Wool with 4% elastane for extra stretch and comfort. A MicroMerino® Fabric. 


Summerino - Celsius 

Made from 45% ultra fine MERINO (Ultra Lightweight 150gsm), 45% natural TENCEL (made from sustainably grown wood fiber), and 10% nylon for extra durability. 


Summerino - Keystone 

Ultra Lightweight 150gsm 100% Australian Merino Wool. A MicroMerino® Fabric. 


Merino Compression

Midweight 280gsm 76% Australian Merino Wool, 15% Elastane and 9% Nylon for extra stretch and compression properties.



Ultra lightweight ribbed 155gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Outer Weight 280gsm Fleece 100% Australian Merino Wool. MicroMerino®  Fabric. 



Midweight 260gsm 100% Australian Merino Wool. A MicroMerino®  Fabric. 



Midweight 260gsm waffle texture 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Stride / Glacier / Velocity

Midweight 255gsm French Terry 100% Australian Merino Wool. A MicroMerino®  Fabric. 


Natural Merino Wool benefits: