TPR（Thermo-Plastic-Rubber material） material is thermoplastic rubber material . It is a kind of thermoplastic soft adhesive material which has rubber elasticity without vulcanization and can be directly processed (such as injection , extrusion, blow molding, etc.).
TTPR material figure:
Our reusable earplugs are made of TPR material . The characteristics are as follows:
Waterproof , Reusable and washable (Easy to clean)
Durable , Nontoxic , Nonirritating
Does not deform
Soft & Comfortable - suits longer duration
Designed to fit most of ear canals
Various colors available
Reusable Ear plugs-cored/uncored
Reusable Christmas Tree Style Silicone Swimming Ear Plugs Washable Hearing Protection Earplugs with String Strap Lines .