Giraffe seamless tube technology. Smooth close knit finish printed in ultra high definition with high density UV stable fabric inks. 4 way stretch technology , SPF ratings 50 and can be worn in multiple ways. For maximum protection, pull over your head to cover your face including your mouth, nose and ears. Ensure a snug fit. To increase the effectiveness simply fold back on itself to double the layers. All our buffs are 50+ UV protection great for the desert and mountain conditions.