@SKIMT and @Fulton Like haraya I tend to travel with my lightweight neutral T-shirts regardless of color--I've worn my lightweight black v-neck U-60 Ibex in all kinds of hot weather--it is just super breathable. What I've been frustrated with in the lighter colors (I have a lemon yellow Ibex) is that they tend to be very see-through. The ivory Duckworth shirt was a bit better in that regard, but the weaver was not as tight (a bit "fluffier")--I ended up not liking the cut nearly as the v-neck--but that is all personal preference. I've not experienced the Outlier cotton-merino T-shirt that I referred to first hand, but I did get my husband a heavyweight Outlier cotton-merino dress shirt (but in that case the fibers are woven together) and that seems super nice--he just hasn't worn it much yet to get a real good sense of it.