The small size feels like it was made for a leaner build without being clingy.
3 PACK SHAKAWEAR MENS ACTIVE SHORT SLEEVE T SHIRTS SHAKA WEAR COTTON TEE SHIRT
You will find that the small size is ideal for layering under flannels.
3 PACK SHAKAWEAR MENS ACTIVE TANK TOP SHAKA WEAR CASUAL SLEEVELESS SHIRT SUMMER
The small size is great if you like your t-shirts to fit close to the body.
3 PACK PROCLUB MENS COMFORT TANK TOP PRO CLUB CASUAL SLEEVELESS SHIRT GYM SUMMER
What stands out about the small is the way it follows your waistline.
3 PACK PROCLUB MENS HEAVYWEIGHT LONG SLEEVE T SHIRTS PRO CLUB CASUAL COTTON TEE
You will notice the small size allows full arm movement without pulling.