All our LSZH (Low Smoke Zero Halogen, sometimes also abbreviated as LSOH), coiled cables are made from H05Z1Z1-F cable.
Because they contain a flame retardant compound they are very rigid, this produces a very stiff, highly springy coil with excellent stretch and retraction. It is mainly used indoors, but can be used outside, however the jacket is not as durable as polyurethane (PUR) or PVC and can be subject to scuffs and scratches.