LD Foam Lining. Comfortable foam padding that easily can be changed or removed for cleaning. Shell of injected PC/ABS , which is zoned and tapered. Supracor™ honeycomb sandwich core. The honeycomb is integrated into the EPP to provide progressive energy absorption. Aramid membrane between the shell and EPP. Patent pending. The aramid membrane prevents penetration through the thin shell, without decreasing the cushioning properties. EPP Core. Density is optimized to work perfectly with Supracor™.