This earplug is made of PU foam, measure 1inches x 1/2inches diameter, and come in a square PP plastic pocket-sized case that can be taken anywhere. This helps to reduce noise. This is a novelty promotional item and should not replace the use of your certified sound reduction devices or personal protective equipment when needed. Add your logo to the container and turn up the heat while turning down the volume! Made from plastic, polyurethane (pur or pu) material, measuring 1.3*1.3 inches, this custom earplugs in square case. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Portable, durable, practical for daily use.