The synthetic T-shirt makes sweat and feels easily bad.
Cotton is a rather expensive natural fiber. The makers of cheap of T-shirts are, therefore, saving on your back by using the less quantity of cotton. The classic trick is to mix cotton with synthetic fibers, which are cheaper to produce. I am sure these names are familiar to you i.e. polyester, acrylic and elastane. The problem is that these fibers breathe badly, hold heat and make the wearer sweat. Unlike 100% cotton cool t-shirts, the synthetic t-shirts retain unpleasant odors.
A cool t-shirt is made of 190 grams of organic cotton. It is very thick and keeps a certain hold, does not wrinkle too easily and especially, because of the matter, takes much more time than a synthetic fiber to retain the odors. It is, therefore, preferable to buy only 100% cotton t-shirts. You should opt for organic cotton also because it is better for the environment as well.
Cheap T-shirts are badly cut.
The famous ‘parachute effect’ is found when the body of the T-shirt is too wide. This problem happens for the reason that the T-shirt is cut straight to make fabric savings. In the worst case, some T-shirts are sewn in tubular. The cotton thread is knitted into a tube to save on cutting. These T-shirts are recognizable for the reason that they do not have seams at the torso. I, therefore, advise against the tubular T-shirt which is formless.
The way the T-shirt falls on your shoulders so, it is also important. The correct size for a cool T-shirt can be defined as the seam of the sleeve at the shoulder must be at the level of your acromion above the junction between your torso and your arm and it will be an accurate fit.
Another problem is that short sleeves are cut straight and they are often too wide and do not follow your biceps. As a result, they sway and damage your style. In addition, a collar that is neither too narrow nor too tight is what makes a cool T-shirt.
The cheap T-shirt does not resist the machine wash.
It is very common that the first wash shrinks T-shirts of poor quality. Then, over time, the washes will deform the fibers. The fabric and seams will curl. In case of a cheap V-neck t-shirt, the V-neck may be deformed and become deeper. To avoid this, the first thing to do is obviously to check if the fabric is thin, thick, soft or rough, and if the seams are straight and do not curl the fabric.
Even with a good quality T-shirt, you must respect the washing instructions. This will allow you to lengthen the shelf life and preserve the softness of the fabric. Think also that a cotton T-shirt will naturally shrink on the first wash.