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Reviews > Clothing > Shirts > Icebreaker Nature 150 Sweetheart Shirt > Owner Review by Kristine Mar

Icebreaker Nature 150 Sweetheart Shirt (2010)
Long Sleeve (For Women)
Owner Review by Kristine Mar
November 12, 2011

Biographical Information:

Name: Kristine Mar
Age: 46
Gender: Female
Height: 5'3" (1.6 m)
Weight: 115 Pounds (52 kg)
Email address:
City, State, Country: New York, New York, U.S.A.

My love for the outdoors began about ten years ago, while I was living in Northern California. Most of my hiking experience includes day hikes, with an occasional 2-3 day backpacking trip. I'd consider myself a 4-season hiker and generally like to keep my pack as light as reasonably possible without spending a fortune. In 2007, I moved to New York City and have enjoyed East Coast hiking and experiencing the outdoors with four seasons. I enjoy hiking in all terrains, and have been fortunate enough to hike in a number of national and state parks, and several countries.

Product Information:

Manufacturer: Icebreaker
Year of Manufacture: 2010
Manufacturer's Website:
Color: Passion
Other Colors Currently Available: Black-Hibiscus,Bliss, Snow-Kelp, Naked
Material: 100% Merina Wool
Size Tested: XS, Also Available in Women's S, M, L, XL
Listed weight: N/A
Actual weight: 5.0 oz/pair (142 g)
MSRP: U.S.$70.00

Product Description:

The Nature 150 is part Icebreaker's Ultralite line and is described as being silky soft and light, allowing the wearer to push her limits in the outdoors in clothes which are manufactured of a fabric that keeps you warm when it's cold, keeps you cool when it's warm, offering maximum breathability, all while remaining odor resistant, and feeling silky soft against the skin. The Ultralite line is meant to be worn as an under layer all year round in varying temperatures.

Field Conditions and Use:

I purchased this shirt to wear as a base layer during the fall, winter, and spring and I have worn this shirt approximately 40 times for multiple activities over the past year including running, snowboarding, hiking, snowshoeing and cross-country skiing. The temperatures during my outdoor activities generally ranged from 20 F (-7 C) to 55 F (13 C). The fabric is very thin and is best worn as a base layer, although I have, on occasion, worn a tank top underneath and have worn it as a mid-layer with a light waterproof shell or soft-shell on top for warmer days.

Photo: Front View

This is actually the second Icebreaker Ultraline base layer that I had purchased in the exact same model, but a different color. I love how the merino wool feels against my skin. It feels like a soft cotton t-shirt and is the most comfortable base layer that I own. Some of the synthetic fabrics on the market have a harsh feel against my skin but the merino wool feels great, and at the same time, does a great job of allowing my skin to breathe even during active pursuits and even when I am sweating, I never notice a smell which many of the synthetic base layers emit after prolonged activity.

I was disappointed that the first one that I purchased reacted to my deodorant and I ended up with yellow underarm stains. I loved the shirt so much, however, that I purchased this one and I have now switched deodorants to one that has no aluminum chlorohydrate so that I would never ruin a merino wool shirt again and so far, I have not experienced the same problem.

I wash the shirt in warm or cold water and allow it to hang dry and it has held up well with no fraying, or discoloration. The fit of the shirt is trim fitting which allows for easy layering and design is attractive. The sweetheart neckline is also comfortable, without being too low or high cut. The shirt never feels too tight or constricting, and the fabric has a nice stretch. The Icebreaker shirts and merino wool in general are pricier than some of the synthetic base layers on the market, but I think that the investment is worth it for the quality and comfort. I do wish however that the company provided a warning on the care instructions advising of the reaction of aluminum-based deodorants and wool products.

Photo: Design Detail on Fabric
  1. Lightweight
  2. Breathable
  3. Wicks moisture
  4. Attractive fit and design which allows for easy layering
  1. Reaction to some deodorants and lack of warning on label
  2. Price

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Read more gear reviews by Kristine Mar

Reviews > Clothing > Shirts > Icebreaker Nature 150 Sweetheart Shirt > Owner Review by Kristine Mar

Product tested and reviewed in each Formal Test Report has been provided free of charge by the manufacturer to Upon completion of the Test Series the writer is permitted to keep the product. Owner Reviews are based on product owned by the reviewer personally unless otherwise noted.

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