I wore this shirt at the rock climbing gym yesterday. I like that it kept me warm as the gym gets a little cold in Winter. This shirt has a warmer material than other long sleeve t-shirts. As another reviewer mentioned, it isn't a silky, smooth material but I found it comfortable and I get the sense that it is rugged and will last a long time which is a plus in my book. Not sure how I'll like it in the Summer when the weather is hot. But a good Winter t-shirt is important too.I can take or leave the "X" logo but the shirt looks and fits like a dream. Realize that the sizes are not the same as US sizes. In US sizes I am a "large" but, from experience, I've learned that I'm more of a XX-Large in these Chinese sizes. I would recommend that the product page include a sizing chart because I'm sure many US buyers will order the wrong size if not warned about this.I like this shirt and recommend it. Just be aware of the sizing considerations if you are in the US.