This UV-resistant nylon zipper is designed to withstand prolonged sun exposure without fading or weakening. Tested to UPF 50+ standards (GB/T 18830-2009), it effectively blocks harmful UV rays while maintaining its color vibrancy. With a UVA transmittance of less than 0.72%, it ensures long-lasting durability even in extreme outdoor conditions. Ideal for tents, backpacks, marine gear, and outdoor apparel that require high resistance to sunlight and weathering.