They're made of a durable Italian fabric that offers plenty of stretch for optimal freedom of movement, as well as moisture-wicking properties that keeps the skin cool and dry during more intense efforts. Fabric printed leg bands are smooth, firm and supportive for your legs. No bulge, no cutting into your quads, no scrunching or rolling. Italian made variable density chamois offers excellent comfort on the ride, with pad density 80-40 . UPF 40+ . All pictures shown are for illustration purpose only. Actual product may vary due to product enhancement : Size ref : XS 28-30 : S 30-32 : M 32-34 : L 34-36 : XL 36-38 : 2XL 38-40 .measurement based on waist size.