“Yellow see-through undershirt fits well”

“Recently I have had to wear a knee brace with an uncomfortable waist strap. To help avoid discomfort I brought this shirt to wear as a undershirt under my brace. If I didn't buy it as an undershirt I would have had to send the yellow shirt back. It is very thin. it is also 60 / 40 cotton poly. I prefer natural fibers. I have other Kavu t-shirts that are supposed to al be this style purchased from STP. The brown, orange, and stone shirts are my favorite cotton/bamboo. I have a light purple shirt that is 100% cotton and cut a little boxily (but is substantial material) then this one. Thin Yellow Cotton/poly that fits well. I don't understand why so many shirt styles are marketed by STP as the same shirt! I don't think I would be street legal if I wore this one as a primary shirt. All the Kavu shirts fit my muscular build and are comfortable. so I keep this thin Yellow undershirt. That's what I brought it for anyway- An Undershirt!”