SpinFit CP1025-M/S Medical Silicone Ear Tips 4–5.5mm

SpinFit CP1025-M/S are medical-grade silicone ear tips engineered to deliver a secure, soft fit for compatible true wireless earbuds with 4–5.5mm nozzle diameters.

These replacement ear tips are precision-molded from high-quality medical silicone to balance cushioning and stability while staying compact enough to fit shallow charging cases. Sold as two pairs (small and medium), the CP1025-M/S set targets users who want improved comfort, consistent seating, and an unobtrusive profile for in-ear headphones like MTW3, Galaxy Buds 2, Soundcore Space A40 and other models that match the nozzle size range.

How do these ear tips improve wearing comfort?

The CP1025-M/S use soft medical-grade silicone that conforms to the ear canal without excessive pressure, reducing hotspots during long listening sessions. Their compact geometry minimizes protrusion while still cushioning the ear for a comfortable seal.

• Medical-grade silicone for softer contact and long-wear comfort
• Small and medium sizes included to match varied ear shapes
• Low-profile shape reduces outer-ear pressure and bulk
• Soft material helps prevent irritation from prolonged use

Will these tips fit my earbuds and charging case?

They are designed for earbuds with nozzle diameters between 4 and 5.5 mm — many popular true wireless models fall within this range. The CP1025-M/S tips are compact so they typically fit into shallow or slim charging cases without blocking closure.

• Compatible with 4–5.5 mm nozzle diameters (measure your earbud nozzle to confirm)
• Compact profile made for shallow charging cases and slim earbud stems
• Mounted securely on standard nozzle shapes used by common TWS earbuds
• Includes two size options to improve fit odds across brands

How do they affect sound and isolation?

Because these tips create a snug, consistent contact with the ear canal, they help stabilize the acoustic seal which can improve perceived bass and reduce ambient noise leakage. They are not acoustically tuned like foam tips, but their secure fit supports clearer, more consistent playback.

• Consistent seal supports fuller low-frequency response
• Stable seating reduces micro-movements that affect sound quality
• Better passive isolation versus loose or worn tips
• Material retains shape for repeatable sonic performance

How do I choose between the small and medium sizes?

Try the medium first if you’re unsure; it fits many average ear canals while the small suits narrower canals or those who prefer minimal insertion. Each pair is easy to swap, so testing both sizes for comfort and seal is straightforward.

• Start with medium for average-sized ear canals
• Choose small for shallow insertion or narrow ear canals
• Replace tips if you feel discomfort or if seal is inconsistent
• Two pairs included to help you determine the best fit

Who is this for: The SpinFit CP1025-M/S set is ideal for true wireless earbud owners who want a softer, medical-grade silicone option that fits nozzles from 4 to 5.5 mm and keeps earbuds low-profile in shallow charging cases. It's a good match for commuters, remote workers, and anyone who values long-wear comfort and a secure in-ear fit without bulky tips.