I/O Bio Merino Signature T-Shirt - Long Sleeve (For Women)

Closeouts. Not your average shirt, I/O Bio Merino made the Signature long sleeve T-shirt with 100% merino wool, a delightfully soft, performance-oriented fabric that will blow your cotton tees into the back of the closet.

Average Rating based on 7 reviews
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  • Verified Buyer Reviewed by Lorraine from Anchorage,Ak on Thursday, August 09, 2012
    Works great with shirt. So soft & comfortable. Just wish I had gotten one with a zipper before all gone. Have the short sleeve as well.
    • Best Uses: Anytime, Under Clothes
    • Describe Yourself: Outdoorwoman
    • Pros: Retains Body Heat, Soft, Stylish
    • Was this a gift?: No
  • Verified Buyer Reviewed by cycling queen from mn on Tuesday, February 21, 2012
    Just what I was looking for in a quality base layer.
    • Best Uses: Outdoor Activities
    • Pros: Quality Materials, Washes Well
    • Sizing: Feels true to size
    • Was this a gift?: No
  • Verified Buyer Reviewed by Cloudy from Missouri on Saturday, December 03, 2011
    I love this shirt! I bought it because of the color. I read in other reviews that it runs large, so I ordered the medium, which fits nicely and snugly on my unfortunately zaftig "L" middle -but I've lost 5 pounds!

    I am wearing it right now. It's perfect as an under layer because it's thin. I also can wear it alone around the house or even to sleep in. I have worn it out, under a fleece vest or sweater, only because it's a bit clingy for my shape - until I lose that other 5 pounds!

    I wish I'd ordered two or three of these!
    • Best Uses: Casual Wear, Going Out, Outdoor Activities, Sleepwear, Travel
    • Describe Yourself: Comfort-oriented, Practical
    • Pros: Comfortable, Figure Flattering, Great Color, Quality Materials, Versatile
    • Sizing: Feels true to size
    • Was this a gift?: No
  • Verified Buyer Reviewed by surfasia from Florida on Monday, August 15, 2011
    I used to think that merino wool is only good in cold weather, but then realized that it is just as breathable and non-stinkable in hot weather. I bought this T with warmer weather in mind. Its my first I/O top in the "150" weight (almost a tissue T) and it is everything I expected-- super soft and breathable. I like the graphic a lot, but beware that the color is very purple - "grape jelly" is a perfect description.
    I'm usually a small in I/O and Icebreaker, but read that this top ran big and the XS is still a bit loose on me. That is why it is appropriately labeled a T shirt and not a performance base layer.
    • Best Uses: Casual Wear, Outdoor Activities
    • Describe Yourself: Practical, Stylish
    • Pros: Comfortable, Quality Materials
    • Was this a gift?: No
  • Verified Buyer Reviewed by tuffy from whitefish, montana on Monday, August 01, 2011
    The fabric is sensitive to a hole or rip but love the feel next to my skin the best Merino ever.
    • Best Uses: Everything wear
    • Cons: Fabric is thin
    • Describe Yourself: Comfort-oriented
    • Pros: Versatile
    • Sizing: Feels true to size
    • Was this a gift?: No
  • Verified Buyer Reviewed by always cold from Pacific Northwest on Tuesday, July 05, 2011
    I ordered both the jelly and sky colors and they are much better than pictured.(The Sky is more periwinkle than baby blue). I was worried the sky may be too light but it is not and does not need a camisole. The neckline is perfect, not too high & not too low. The sizes do seem to run large (I am between a small and a medium but the small fit fine). We live in the Pacific Northwest and I plan to use this shirt all year round. I can use it in the summer when it cools down as the sun goes down and in the winter as base layer. This I/O BIO shirt is not quite as thick and not as stretchy as the Smartwool midweight crew (not a negative for me). I have an I/O BIO contact shirt that I LOVE and I am sure these will also become favorites. My sky shirt had a defect and had to be exchanged [...]
    • Best Uses: Casual Wear, Outdoor Activities, Travel
    • Describe Yourself: Comfort-oriented, Conservative, High-end shopper, Practical
    • Pros: Comfortable, Figure Flattering, Great Color, Quality Materials, Versatile
    • Sizing: Feels too large
    • Was this a gift?: No
  • Verified Buyer Reviewed by woolly from san francisco on Friday, June 10, 2011
    This is a nice shirt, excellent fit when I got a small instead of medium - trim without being clingy or confining. (I usually wear a medium in most shirts, and often a large in icebreaker). I haven't decided whether to keep it, only because of the cost vs. versatility. I'd rather it didn't have a print, altho I like the jelly color. I really like the neckline which is not too high or low.
    • Best Uses: Casual Wear, Outdoor Activities, Travel
    • Describe Yourself: Comfort-oriented, Practical, Stylish
    • Pros: Comfortable, Figure Flattering, Quality Materials
    • Sizing: Feels too large
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