This mesh shirt does an excellent job keeping off the mosquitoes. Since I started wearing it during the most mosquito-prone times of day (morning and evening), I haven't had to deal with any bites. I don't even flinch when I hear one buzz by my ear as long as I am wearing this.In the past, I had tried the types of mosquito mesh that cover your head only. They made me feel claustrophobic and suffocated, and of course offered no protection to your torso. I was worried that this shirt would make me feel the same way, since it also covers the head, but after getting through my initial reaction I am fine in this shirt. It turns out that in the head-only garbs I was actually getting anxious about the mosquitoes biting my back and arms.The only two drawbacks to this kind of protection are that it *does* cause you to retain a bit more heat, which can be an issue during the hottest hours of summer. So it is not something that I like to wear in the sun, especially not in the late morning or afternoon. The other drawback is that the mesh slightly reduces your visual acuity, which makes detailed tasks more challenging in low light conditions. However, since light can be added, and since flailing and mosquitoes also makes detailed tasks more challenging, I think that latter disadvantage is a wash.Two details of this product tell me that it is a work of high quality.One is the wide, comfortable elastic bands around the wrists and the waist, which keep these areas snug to prevent insects from getting in. It's a definite step up from the drawstring-style closures.The other is the zipper across the front at neck level to allow you to eat or drink without taking the whole shirt off. The zipper is wide enough to enable you to tip back the whole top like a hood if you want your head free, and the zipper is made by YKK, which is a manufacturer that I have found to make the most reliable zippers.I bought mesh pants by Coghlan to protect most of the lower half of my body, and now I am undistracted by those biting pests when I am out in the gardens in evening or morning. With gloves protecting your hands and a DEET or pyrethrin-based repellant on your socks, the ensemble makes one pretty fearless. Now all I have to worry about is chiggers (Trombiculidae).