400 NBS rubber outsole with ''rope'' tread and internal EVA midsole RSS Shoes by Etnies Classic Rap styling Vulcanized construction Thin padded tongue and collar STI Foam Lite level 1 footbed Foam Lite Foam Lite insoles are tuned for maximum comfort and are formulated with a breathable moisture wicking material called Ortholite. This durable lasting foam stays squishy for a long time for superior comfort. The insoles also incorporate recycled rubber to make them more eco friendly. There are two levels of Foam Lite: Foam Lite 1 is an entry level basic model with a flat sheet of Ortholite foam. Foam Lite 2 has an added EVA heel collar that helps support your foot to provide extra cushioning.