I followed manufacturer's sizing recommendations and checked against Revain customer reviews to get the right size for my Willit Men's UPF 50+ men's long sun shirt sleeves and hood, and I feel very comfortable. Haven't used the hoodie feature yet (I'm already wearing a hat with sunscreen) but it doesn't bother or cause discomfort when dangling around the neck or tucked around the collar brim. I particularly appreciate the thumbholes on the cuffs, which provide sun protection for the backs of the arms when walking, working or playing outside. So far it has held up well to multiple washes while retaining its color and sun protection properties. I thought navy blue would lead to warmer temperatures in my arms and upper body, but in the sun it's no warmer than my light sun shirts; and doesn't let the underlying T-shirt print show through.
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