Custom Moulded Ear Tips: Fits the exact shape of your ear easily and quickly. This creates a perfectly fitting earbud that never hurts, never falls out and provides superior noise isolation. Easy-to-Shape System: Just heat thermoplastic molds in boiling water, let them cool a bit, and shape them into your ears. That's it, the only custom earbuds that can be reshaped if you don't get the perfect fit the first time. Three layers of sound insulation: earplugs, one layer of sponge sound absorption; thermoplastic mold, two layers of thermoplastic sound insulation; sound insulation cover, three layers of high-density silicone sound insulation. Provide high-quality effects and enjoy quiet time. CUSTOM COMFORT: Custom molded ear tips can be easily and quickly molded to the exact shape of the ear by the user, creating a safe and comfortable sound-isolating ear tip. Custom molded ear tips are remolded. Application: Great for shooting, traveling, working, sleeping, loud concerts and security. Delivery Quantity: 1 pair