... are all available 4. any color is ok These micro rings have a coating of silicone inside. The silicone ... Silicone is an 'anti slip' material, This means the micro ring stays firmly in place and will not slide down ... the hair. Micro rings are available in Blonde, Beige, Brown, Dark ... black,light brown,brown,dark brown,blonde silicone lined micro ring / silicone micro bead