Design: Anna Buechin, Umbra"s stylish ride shower rings will keep your shower curtain up and moving back and forth with ease. This set of 12 curtain shower rings are chrome plated and feature ball bearings. Easily slide your curtain open and closed. Contemporary, modern and practical design! Rings measure 3" x 1.5". Umbra is the worldwide leader in casual, contemporary and affordable design for the home.