If you want a durable, colorful silicone cover specifically designed for the 2024 AirPods 4 with a built-in cleaning kit, choose XMBYGY Pen Case; if you need a rugged, water-resistant hard shell to organize multiple audio gadgets and small travel essentials, choose KB EAR CCZ Taichi.
• XMBYGY Pen Case: Its biggest strength is the specific fit for AirPods 4 combined with a 3-in-1 cleaning tool, but its trade-off is that it is soft silicone only suitable for that single model. This pick is for anyone who wants style and hygiene for their specific earbuds.
• KB EAR CCZ Taichi: Its biggest strength is the shock-proof hard shell design that protects against water and dust while organizing various cables and accessories, but its trade-off is a generic shape that lacks the snug, decorative fit of a dedicated case. This pick is for travelers and audiophiles managing a cluttered gear bag.
The XMBYGY Pen Case is built around a very specific user: someone who owns the 2024 generation of AirPods 4 and cares about both aesthetics and maintenance. The product data sheet makes it clear that this is not a universal solution; it is engineered strictly for the AirPods 4th Generation Earbuds. If you are trying to use this on older models like the 1st or 2nd generation, or even the Pro series and 3rd Gen, it simply will not work. This specificity is actually a feature, ensuring the soft silicone fits perfectly without interfering with the charging station or deforming over time.
What sets this option apart is the inclusion of the 3-in-1 cleaning pen. Most cases just sit there protecting the device, but this one actively helps maintain it. The kit includes a flocking sponge, a soft brush, and a metal pen tip. This is a practical addition for anyone who uses their earbuds daily, as it allows you to clean stubborn dirt from the mesh and crevices without needing separate tools. The material itself is premium silicone, chosen for its durability and impact protection. It comes in a "NUT+FSL+Toast" color scheme with a cartoon theme, which gives it a playful, youthful vibe.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-27 · 6 min read · Independent comparison
This case is ideal for parents looking for a gift for a teenager or child, as the description highlights it as a stylish choice for teens boys and girls. It is also perfect for someone who wants a set of three cases to rotate through, offering variety in color and pattern. However, if you are an audiophile who needs to protect expensive In-Ear Monitors (IEMs) from water damage, or if you carry a messy collection of keys, flash drives, and multiple headphone cables, this soft silicone cover is too fragile and limited for your needs. You should skip this product if you do not own the specific 2024 AirPods 4 model.
In contrast, the KB EAR CCZ Taichi is designed for the mobile professional, the traveler, or the serious music listener who carries more than just a pair of earbuds. This is a hard-shell case with a sealed TPU design, meaning it offers genuine water-proof and dust-proof protection. While the XMBYGY case relies on a soft outer layer, the Taichi features a rigid exterior with PE lining inside. This lining provides excellent elasticity and cushioning, effectively reducing the impact of external forces. If you toss your gear into a backpack where it might get crushed or exposed to rain, this hard box is the safer bet.
The versatility of the Taichi is its defining characteristic. It is not limited to one brand or model. Beyond headphones, it serves as a general organizer for eartips, charging cables, memory cards, flash drives, keys, watches, and jewelry. The interior space is spacious enough to handle this clutter, solving the problem of items getting lost in a pocket or bag. It also includes a fixed rope, making it easy to hang on a belt or clip onto a larger storage bag.
This product is best for people who value organization and durability over cute aesthetics. The design is functional rather than decorative, available in black, white, gray, and transparent black. It is lightweight at only 15 grams, so it adds almost no weight to your travel load. If you are someone who needs to keep their audio equipment safe during a journey, this case acts as a true travel assistant. However, if you are looking for a case that looks like a cartoon character or matches a specific color trend, this utilitarian hard shell might feel too plain. It is also not a direct replacement for a slim, pocket-friendly silicone sleeve; it takes up more room due to its protective structure.
• Best for specific AirPods 4 owners → XMBYGY Pen Case (Exact fit prevents loose movement).
• Best for multi-device organization → KB EAR CCZ Taichi (Holds IEMs, cables, keys, and drives).
• Best for moisture protection → KB EAR CCZ Taichi (Sealed TPU design blocks water and dust).
• Best for hygiene maintenance → XMBYGY Pen Case (Includes integrated cleaning sponge and brush).
• Best for impact resistance → KB EAR CCZ Taichi (Hard shell and PE lining absorb shocks better).
• Best for gifting to kids/teens → XMBYGY Pen Case (Cartoon theme appeals to younger users).
• Best for travel portability → KB EAR CCZ Taichi (Fixed rope allows hanging; waterproof for rough trips).
• Best for budget-conscious bulk buyers → XMBYGY Pen Case (Comes with a set of 3 cases plus a cleaner).
After weighing the design intent and feature sets of both products, I would personally buy the KB EAR CCZ Taichi if I were packing for a trip or managing a collection of high-end audio gear. The hard-shell construction and water resistance provide a level of security that soft silicone cannot match, especially when dealing with valuable electronics in unpredictable environments. The ability to store cables, keys, and drives alongside my headphones makes it a superior organizational tool. However, if I were buying for a toddler or a young student who just got their first pair of AirPods 4, I would immediately choose the XMBYGY Pen Case. The included cleaning kit is a fantastic bonus for maintaining the device, and the cartoon design is exactly what a child would want. Ultimately, the right choice depends entirely on whether your priority is rugged utility or specific aesthetic and maintenance care.
No, the XMBYGY Pen Case is specifically designed for the AirPods 4th Generation (2024) and explicitly states it does not fit the 1st, 2nd, 3rd generations, or any Pro models.
Yes, the case is described as having wide applicability and can store various headphones, including IEMs and wireless models, along with their cables and accessories.
Yes, it includes a 3-in-1 cleaning kit with a flocking sponge, soft brush, and metal pen tip to help clean the earbuds and keep them hygienic.
Yes, the product features a sealed TPU design that is water-proof and dust-proof, making it suitable for outdoor activities and travel.
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