Under ArmourMen's Armour HeatGear Compression Sleeveless T-Shirt , Midnight Navy (410)/White, Medium

My daughter wears this under her softball jersey that has buttons (incase a button comes undone while playing). Perfect fit and stretch and not too hot.

Good shirt and slim fit

It looks good but the fabric is not as strong as I expected..

"Heatgear" is a giveaway. Should have "read" the title BEFORE purchase. That is alright will have use for it.