Xcel Women's 4-Way Stretch Short Sleeve Ventx Crew Top, River Blue/White,Blue/White,S 63% recycled poly/27% rayon (bamboo)/10% spandex Breathable 4-way performance stretch Ventx fabric Rated UPF30 for Very Good sun protection, blocking 95% of UVA/UVB radiation Moisture wicking and quick drying Lightweight with a loose, relaxed fit Comfortable flatlock seams lie flat and smooth against your skin