Rainbow Holoholo Gerry Lopez Signature Men's Sandals - Black/Green CamoThe Rainbow Holoholo Gerry Lopez Rubber Signature Men's Sandals. Pipeline and Yoga Master, Gerry Lopez, designed The Holoholo to out, have a good time, and live with Aloha. The Holoholo is a dual density rubber that has truncated domes that stimulate the nerve endings, energy channels, & pressure points that start & end in your feet & toes. Wearing these sandals is like a constant foot message. Features single layer arch dynamic density rubber top