DEFY Slim These blue replacement eartips use

These blue replacement eartips use a threaded core and are compatible only with ISOtunes products

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Communicate with colleagues and listen for warning signals all while enjoying nonstop certified protection

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and Large do not fit inside of the FREE or FREE 2

DEFY Slim These blue replacement eartips useSame Great Protection. Slimmer Fit. DEFY Slim is an ultra comfortable electronic earmuff, featuring superior protection and environmental awareness. With active gunshot noise suppression, Bluetooth compatibility, and a background noise dampening microphone, DEFY Slim allows you to align your sights with ease without sacrificing your safety.