Long wearing and durable., Rubber compound for maximum durability used in high wear areas. Suede/ Synthetic/ Mesh. Ndurance, Rubber Cup Outsole. The 430 is new to the Numeric line this season. It features a timeless blucher construction sitting atop a classic court style sole for all day comfort. Whether skating or just casual wear, the C-Cap midsole in both the heel and forefoot creates a comfortable underfoot feel, and the reinforced upper makes the 430 durable for skating. C-CAP mid sole puck in heel and forefoot for added cushioning. EVA lasting board for additional step in comfort. Rubber toe cap underlay for extra durability.