Features: Experience superior noise isolation with our slow rebounds memory foam earplugs, comfortable wear and effective hearing protective during extended use. Crafted from memory foam that conforms to your ear canal, these earplugs is available in silicone and red memory foam option, complete with a convenient storage case. Ideal for music enthusiasts, students, and office workers who require a quiet environment. Perfect for use in noise sensitive environment such as subways, offices, and study room. Enhances your auditory experience while safeguarding your hearing with these earplug accessories, addition to your portable sound gear collection. Specifications: Component: Foam+Silicone Type:Three Pair Of Silicone Ear Caps And Red Memory Sponge Ear Caps/Three Pair Of Silicone Ear Caps And Black Memory Sponge Ear Caps/Six Pair Of Memory Sponge Black/Six Pair Of Memory Sponge Red /4.5mm Six Pair Of Memory Sponge Black/Six Pair Of Silicone Ear Caps Size:As shown in the figures Package Includes: 1 Set Memory Foam Ear Tips note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.