Lilly Pulitzer 4" Riv Cover-Up Shorts Comfort and style combine in the Riv Cover-Up Shorts. Throw them on and go! High rise, pull-on, cover-up short with an elastic waist, slash pockets, and non-functional drawstring. 4" Inseam. Rayon Voile (100% Rayon). Machine wash cold, delicate cycle, separately.