I bought this for indoor use and it's perfect. I also have a long sleeve Merino 365 230gsm base layer and love to sleep in it almost every day. So I decided I had to get another one of these and accidentally found this piece of 280 GSM with a 50% discount and snatched it up right away. The feel and fit of this 280gsm is slightly different from the 230gsm, the former being a bit looser. in the arms and a more normal length in the torso, as opposed to the latter which is really long in the torso, like a friend's shirt (but that also makes it comfortable to sleep in). The inside of this 280 gsm is more like a matte fleece compared to the 230, but both are 100% merino wool and feel great against the skin.
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