This shirt is a swim rashguard. When I bought it I thought it was a sun protection shirt that we were going to use on a hike. This is definitely a swim/beach shirt. The fabric is the same as any other swim shirt. Probably too fat for hiking. I ordered the XS for my very tall and thin 6 year old daughter. She usually wears 6/6x in shirts. The turquoise color is nice and bright. I have a feeling this shirt is definitely for a girl (not a boy). It's not what I need but I'll keep it to myself as it fits my daughter perfectly. It's a slim fitting shirt and the sleeves are definitely long. She is just over 48 inches tall and weighs 47 pounds for reference.
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