Stretchy and comfortable. This shirt has extra cloth in the armpit area. I was expecting a cooling shirt but this isn't it. It's actually a bit warm so I'll use it in cold weather months instead of the summer.
2 Packs Bamboo V-Neck Undershirt
Designed as advertised, totally happy with them.
David Archy® 2 Pack Men’s Bamboo Underarm Absorb Sweat V-Neck Undershirt Comfort Breathable T-Shirts
My husband loves theses shirts
One reviewer suggested that medium size would fit someone who is 5'6" and 165 lbs and indeed my cotton undershirts are size medium. Well not all bodies with the same height and weight have the same shape and the medium was too small (more like a slim fit). The 8% Lycra caused the undershirt to fit too snug for comfort. I ordered the large size and hope for a better fit. The fabric will be great for travel.