Comply Premium Foam Eartips - Canal Tips, Short (Large) Black, 3-pair) &ndash; Fits Invisio, Surefire, CEP, Cavcom, Clarity Aloft The original foam tips trusted and used by the military for hearing protection and communication. Best for High-noise Environments, Military, Audiology, Aviation, and Industrial Use. Made in the USA using proprietary memory foam materials With longer length than standard eartips, Canal Tips are engineered to create a custom, deep in-ear fit for maximum noise isolation. NRR/dB rating depends on device attached to Super-soft memory foam reduces earphone headset irritation and fatigue. Comply foam tips are 2x softer than silicone tips so you have the most comfortable communication experience Body-heat activated foam adapts to ear canal to provide a perfect seal and snug fit to keep earphones or headset in place Compatible with all major communication brands: CavCom, Communication Ear Protection (CEP), Clarity Aloft, Crai Spa, EuroSonit, Gentex, Gibson and Barnes, GSM Walker, Invisio, Motorola, OTTO, Savox, Selex, Sensear, Shothunt, Surefire, Silynx, etc.