UV PROTECTION - The back of the umbrella has a black coated sunscreen that can resist most ultraviolet rays.UPF 50+ It can also make you more cool under the umbrella. Effectively prevent sunburn, sunburn, heat stroke.It's a good helper for every girl in the summer. Note: This is a rian/sun super light umbrella. Because of its ultra lightweight and ultra silm design, it will not be as strong as an umbrella. This is a manual umbrella, need to push by hand to open. When using, please push in the end and hear "click", need to use a little force.