Many fans or music lovers, in the life of listening to songs with in-ear headphones, may pay more attention to the sound quality of the headphones themselves. Ignore the role of the silicone sleeve, choose a good silicone sleeve, it will have a Great increase in the sound quality, tone and other performance of the headset. The special metal-coated silicone case delivers a rich, calm, rich bass that enhances the bass feel of the headphones. At the same time, it can effectively block the excess noise and improve the wearing comfort of the earphone. Ultra-soft special silicone, the imported material is more sturdy, will not cause sound fluctuations due to the deformation of the ear canal, suitable for 99 in-ear earplugs, headphones. Using inferior silicone sleeves, the high-pitched sound is high, the bass is a bit imaginary, and there is a phenomenon of leakage. After using a good silicone sleeve, the bass becomes very real, the leakage phenomenon is gone, and the high So if you don't feel good about the bass of your headphones, don't forget to put a good silicone case on your headphones when listening to music. It can add balance to your headphones and Give you better bass performance. Specifications: 1. Name: silicone memory foam in ear earphone 2. Specifications: 4.2mm 3. Color: Red/Blue/Gray/Black 4. Material: High quality inert sponge Feature 1. Comfort for ears The memory foam provides all-day comfort, while eliminating in-ear irritation and fatigue often associated with stock silicone tips. 2.Sound isolation Sound isolating design to maximize the noise reduction for high-intensity listening. The tips create an optimal seal and channel sound directly into the ear canal, transforming your listening experience from ordinary to extraordinary. 3.High purity medical grade silicone construction delivers durability and biocompatibility 4 High quality e arphone memory foam, built-in full black sound guide tube, by reducing low frequency noise shielding; 5. 4.2mm equivalent ,stretch the elastic around the catheter about plus-minus? 0.5mm. Instructions Gently press the memory sleeve with your fingertips to make it smaller Then quickly put the memory cotton sleeve into the ear After a few seconds, the memory foam slowly expands and sticks to the ear canal. The memory foam is slowly swelled after being flattened into the ear canal, knowing that the ear canal is filled most closely, so that the sound insulation is greatly increased, so that you can enjoy music in a noisy environment without increasing the volume, and the colleagues also protect the eardrum. Memory cotton earplugs can "feel body temperature and soften" when worn. The porous structure allows you to wear comfortably for a long time without ear pain. The memory cotton is different from the material of the general silicone ear