Baseball caps are not only used to shade the sun, but also to be worn as accessories, and many people can be seen wearing baseball caps everywhere on the road, which has become a popular trend. Some foreign netizens are curious about why there are small holes in the baseball cap? The post caused a lot of discussion, and most people thought it was for ventilation.
This netizen accidentally noticed that there were several small holes in the baseball cap, so he posted on the "Quora" forum and asked, "Why are there holes in the baseball cap?" The post sparked discussion, "Because if you don't, your head will get very hot, in simple terms, ventilation", "Most baseball caps and helmets have holes that allow cool air to circulate to the player's head." Baseball is usually played in warm weather, and this circulation can help prevent excessive heat build-up", "I would say that the purpose of the eyelets is ventilation, and if you don't have a way to expel the heat that has accumulated in your head, then you will sweat under your hat".
Another insider elaborated, "The small holes in the top of the baseball cap are called 'eyelets' or 'vents', and they serve a variety of purposes, including cooling the head by dissipating heat to help keep the head cool, and allowing air to circulate to reduce sweat build-up. In addition, eyelets can reinforce the fabric around the holes and prevent tearing or abrasion, helping to improve the durability of the hat. Finally, the eyelets may have a decorative function, depending on the design of the hat."
Some netizens shared their feelings, "When I wore them, I never felt any real air flowing, I think it may be more psychological, but fortunately there are holes under the hat, which can change the temperature of my head from stuffy to cool."