Features: 1. Thinner earbud edge , more softly to wear,and for stronger noise isolation effect. 2. for Stronger sound and more penetrating tenor. 3. Durable and general; Soft and fitting your ear, long for time to wear without swelling. 4. Non-toxic, harmless, no smell, and no stimulation for human body, no allergic reactions. 5. Instructions For Use: -With one hand hold the ear tip and the other, the in-ear earphone driver. -Place the driver of the earphone in the edge of the ear tip canal. -Apply pressure and with a circular motion, twist with one hand clockwise and with the other the opposite direction, until the ear tip has fully covered the driver of the earphone. -Once you have put them on properly, they will stay on securely. 6. Applies to: Universal in-ear moving iron headsets headphones. Tip: Silicone Eartips x 1Set = 3 Pairs (L x 2pcs, for M x 2pcs, S x 2pcs) Specifications: Device Type: Replacement Earbuds Accessories Material: Silicone Color: Gray+Red (shown as pictures) Size ( For reference): (Approx.) S: Outer Diameter 9mm/0.35in, Height 8mm/0.31in M: Outer Diameter 11mm/0.43in, Height 9mm/0.35in L: Outer Diameter 12mm/0.47in, Height 10mm/0.39in Catheter Diameter (S, for M, L): 4mm/0.16in Quantity:1 Set (other accessories demo in the picture is not included) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!! Compare the detail sizes with yours, please allow 1-4CM differs due to manual measurement, thanks! Package includes: 3 Pairs(6Pcs) X Silicone Earbuds (S, for M, L) (No retail package)