Glow in the dark plastic

"Thermoplastic Elastomers, or TPEs, are combining the properties of a thermoplastic with those of rubber. By varying compounds various demands can be met, to pose approvals for medical applications or for food contact, as well as resistance against UV and Ozone influence, extreme heat or cold, chemicals.
TPE's are easy to colour: fluorescent, metallic and pearl effect, glow in the dark."