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"This is just right. Small is sized properly and the wool jersey lays perfectly against my husbands chest to hold the heat in his body as winter approaches."
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£79.99
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£79.99
Soft, comfortable and versatile for a wide variety of active pursuits, the Merino 125 Cool-Lite™ Sphere III Long Sleeve Tee features our lightweight Cool-Lite™ merino jersey.
Good for:
60% TENCEL™ Lyocell, 40% merino wool, exclusive of decoration
Machine wash cold, gentle cycle. Wash with like colors. Do not use softener. Do not bleach. Do not tumble dry. Line dry in shade. Cool iron. Do not dry clean.
Model measurements:
Height: 186cm / 6'1". Waist: 82cm / 32". Alex is wearing size M.
Key product measurements:
Back High Point Shoulder to Hem: 72cm (Based on size M)
Regular Fit
Neither snug nor loose - garments that are worn solo or over other layers.
Standard delivery: free for all order over £ 40. Delivery in 5-7 days, from Monday to Saturday, during working hours.
Please visit our Delivery page and find out more about the ways in which you can receive our products.
You have 30 days from delivery to follow our quick and easy return procedure.
Overall rating: 4.7916665 / 5 from 72 reviews.
The 125 Sphere T-shirt is praised for its perfect fit, superb color, and comfortable feel, making it a versatile choice for various activities. Customers appreciate its lightweight nature and comfort, especially as a base layer.
Review topics: ["fit","weight","quality","shirt","feel","material","sleeves","base layer","fabric","layer","wear","buy","medium","control","colour","hoodie","clothing","brand","breathes","holes"].
"This is just right. Small is sized properly and the wool jersey lays perfectly against my husbands chest to hold the heat in his body as winter approaches."
— Joy L. (5/5)
"Great t-shirt. The fit is great and it has become my go-to for sunny days. The 125 Cool-Lite fabric is so cool in the heat."
— Todd (5/5)
"I love the weight of the 125 Cool-Lite - this is perfect for a hot summer day."
— Todd D. (5/5)
"My husband likes the fit. He bought a large, his usual size, and with his athletic build, he finds it is comfortable and loose (he is not a fan of skin tight shirts). He is 5'11" and 170 lbs. The color bittersweet I think it was called is really sharp. The fabric is exceptionally soft. It will be a good travel/hiking shirt when we go to New Zealand this fall."
— canuckinvt (5/5)
"This is my favorite casual first layer over a half sleeve base layer and using a sports jacket on top worked perfect for mild Texas winter Frequent wear makes the fabric wear down around the neck rib and it lasted me under 2 years , then only draw back and I wonder if there is a way to reinforce these areas"
— Atif (4/5)
"Versatile, but fits tight. Good shirt or layer for in between. 125 is pretty thin. I bought a couple in size Medium. I typically layer a short sleeve T over the top for casual evenings or cool mornings. The fit is tight like a base layer, but a little more. That includes the neck."
— Rambler (4/5)
"super soft with a touch of warmth for cool days"
— Michael R. (5/5)
"Extremely flexible top for a range of temperatures."
— Gary B. (5/5)
"Very nice. In the future i will likely purchase a heavier long-sleeve shirt. I am a fan of merino wool and Ice Breakers New Zealand origin."
— Lee H. (5/5)
"Lovely material. Fits perfectly."
— Mike D. (5/5)
Find the size that fits you best based on people just like you.

Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different sizes, order the size indicated by your chest measurement for tops and your hip measurement for pants.
| XS | S | M | L | XL | XXL | XXXL | |
|---|---|---|---|---|---|---|---|
| Chest | 33-35 | 35-37 | 37-40 | 40-43.5 | 43.5-46.5 | 46.5-49.5 | 49.5-53 |
| Arm length | 33.5 | 33.8 | 34 | 34.3 | 34.5 | 34.8 | 35.3 |
| XS | S | M | L | XL | XXL | XXXL | |
|---|---|---|---|---|---|---|---|
| Chest | 84-89 | 89-94 | 94-102 | 102-110 | 110-118 | 118-126 | 126-134 |
| Arm length | 85-85.75 | 85.75-86 | 86-86.5 | 86.5-87 | 87-87.75 | 87.75-88.75 | 88.75-89.75 |
Our three different fits - slim, regular, and relaxed - ensure that when worn together, layers move and breathe like a single garment.




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