BComply S-400 Active Earphone Tips (Charcoal, 3 Pairs, Mixed) ReviewbP PP Comply S-400 Active Earphone Tips (Charcoal, 3 Pairs, Mixed) PProvide a custom stay-in-place fit for today's active lifestyle.PBlocks noise for enhanced audio experience.PAmazing all-day comfort.PCompatibility: 4 Models to fit all major earphone brands (100, 200, 400, 500). See compatibility chart in the DESCRIPTION - From the Manufacture section.