Headphones with silicone ear tips provide a better seal in the ear canal, which can improve sound quality and block out external noise. However, some people find silicone ear tips uncomfortable or have allergies to silicone. Headphones without silicone may be more comfortable for extended wear but may not provide as secure of a fit or as good noise isolation. Ultimately, the choice between headphones with or without silicone depends on personal preference and comfort. **

An ergonomic office desk is designed to provide maximum comfort and efficiency for the user. It typically includes features such as adjustable height, keyboard trays, and monitor stands to promote proper posture and reduce strain on the body. These desks are customizable to fit the individual's needs and help prevent common office-related injuries such as back pain and carpal tunnel syndrome. **

Yes, silicone does stick to silicone. When two silicone surfaces come into contact, they tend to adhere to each other due to their similar chemical composition. This property makes silicone a popular material for creating airtight seals and bonding silicone-based products together. **

Ergonomic mice are designed to provide more comfort and support for the hand and wrist, which can be beneficial for people who spend long hours working on a computer. The ergonomic design can help reduce strain and discomfort, and may even help prevent conditions like carpal tunnel syndrome. However, it's important to find the right ergonomic mouse that fits your hand and provides the support you need. Overall, I think ergonomic mice can be a helpful tool for promoting better hand and wrist health during computer use. **

Yes, this is a good ergonomic office chair. It has a high backrest for proper support of the spine, adjustable armrests to reduce strain on the shoulders and arms, and a comfortable cushioned seat with adjustable height and tilt. Additionally, it has a breathable mesh back to promote airflow and reduce sweating. Overall, this chair is designed to provide proper support and comfort for long hours of sitting, making it a good choice for an ergonomic office chair. **

It is generally not recommended to apply new silicone on top of existing silicone. The new silicone may not adhere properly to the old silicone, leading to potential issues with adhesion and durability. It is best to remove the old silicone completely before applying a new layer to ensure a proper bond and a long-lasting seal. **

Yes, silicone can be applied on top of existing silicone. However, it is important to ensure that the existing silicone is clean and free of any dirt, dust, or residue before applying new silicone. Additionally, it is recommended to use a silicone primer to promote adhesion between the old and new silicone layers. This will help to create a strong bond and ensure a durable seal. **

Yes, there are in-ear headphones without silicone tips. Some in-ear headphones use foam tips instead of silicone, which can provide a different fit and feel for the user. Additionally, there are also in-ear headphones that use a unique design or material for the earpiece that doesn't require traditional silicone or foam tips. These alternative options can provide a comfortable and secure fit for those who prefer not to use silicone tips. **