What is UPF50+?
UPF stands for Ultraviolet Protection Factor and is the rating given to clothing for its broad-spectrum protection against both UVA and UVB rays! SPF in sunscreen measures the effectiveness only against UVB rays, while UPF measures protection against the full spectrum of ultraviolet radiation. All UPF50+ Tutublue clothing offer broad-spectrum protection that blocks 98% of UVAandUVB rays!