The upgraded cloud sunblock original yarn and ice silk material under the waistband can block more than 99% of UV rays, providing outdoor protection for the legs. The entire pants use cooling technology fabric, which gives a refreshing feeling when worn, and has two-way breathable micropores that keep you dry and comfortable even when sweating. The original yarn material makes the sun protection performance more stable, maintaining a UPF50+ sun protection rating even after multiple washes.