Sustainability and style. Meet the On Cloudeasy. The On Men's Cloudeasy Shoes in Black Rock is a minimalist all-day sneaker. Each On Cloudeasy shoe is made of just 15 pieces each carefully chosen for fit, function, comfort and sustainability. Reversible webbing used for the lace eyelets and the heel tab is not only an aesthetic, but a sustainable way to get two looks out of one material.