This Sun-protective Clothing is made of polyester fiber. The fabric is lightweight and soft, which makes it easy to pack and carry, and can be folded and stored in a small cloth bag without taking up much space. It can block the most harmful ultraviolet radiation to protect your skin. The hood can also protect your neck and head from sunlight and ultraviolet radiation. There are multiple sizes to choose from. 5 1/10" L x 3 1/8" W x 1 2/10" W