The Perina slingback from Arche puts a mod twist on a traditional silhouette with its criss cross straps and sassy wedge heel, but there's one more thing: it doesnĘt slack on comfort either. The 100% natural Latex sole is poured with pure Hevea milk. The Hevea is a tree grown in tropical Asia, and will preserve the purity of the Latex, providing you with a suppleness, elasticity, resistance, and undeniable comfort.