Comprehensively considered sizes to fit your needs With consideration of different sizes of ear canals and sound preferences, we specially equipped the HS19 with five different types of ear tips with most types being available in three sizes, for a total of 12 pairs of ear tips: balanced, vocal, bass, each comes with 3 pairs, foam with 2 pairs and bi flange with 1 pair. These ear tips allow you to get the right fit for your ears and your sound preferences, truly bringing music to your ears. Thoughtfully considered every last detail In addition to the equipped ear tips, there is also a high-quality storage case, which is made of black, frosted PP plastic with dimensions of merely 93x79x16mm. To make sure the ear tips within the case are truly secure, the diameter of each ear tip securing post is fine-tuned according to the inner diameter of the ear tips, allowing you to easily take them out and settle them down.