• Acoustic channel technology and engineering filter for clearer conversations. • Low-level noise reduction that blocks excessive sound without affecting hearing your own voice. • Limits the occlusion effect to avoid the sensation of echo and "head underwater" while speaking. • Includes 8 ear tips in 4 sizes (XS, S, M, and L) to find the perfect and comfortable fit. • Includes a carrying case to keep the earplugs safe. • Sustainable, washable product designed for long-term repeated use.