If you want dedicated, wired sleep headphones with a built-in microphone for side sleepers who need noise isolation without active electronics, choose Ururtm Sleep Soundproof Earbuds; if you already own the Soundcore Sleep A20 or A30 and need a fresh, secure seal to restore comfort, choose Klowcok Replacement Ear Tips.
These two products sit in completely different lanes of the audio market. One is a complete, standalone solution designed specifically for the act of sleeping, while the other is a maintenance accessory meant to extend the life and comfort of a specific pair of wireless buds. Understanding this distinction is the only way to make the right choice for your needs.
• Ururtm Sleep Soundproof Earbuds: The biggest strength is its all-in-one design featuring soft silicone encasement and a 3.5mm wired connection that eliminates battery anxiety for long nights; the trade-off is that it relies entirely on passive sound isolation rather than active noise cancellation technology.
• Klowcok Replacement Ear Tips: The biggest strength is the immediate upgrade in fit and hygiene by providing six pairs of washable silicone tips in three sizes; the trade-off is that these are just accessories and do not include any audio drivers or connectivity features.
• Who is this for? The Ururtm pick is for someone looking for a primary sleep aid device, whereas the Klowcok pick is strictly for existing Soundcore Sleep A20/A30 owners needing better ear seals.
The Ururtm Sleep Soundproof Earbuds are engineered from the ground up to solve the specific physical challenges of sleeping with audio devices. The design philosophy here centers on minimizing intrusion. These earbuds feature a rounded tip enclosure made entirely of soft silicone, which fully encases the sound components. This means there are no hard plastic edges digging into your skin when you roll over onto your side during deep sleep. At 15 grams, the unit is incredibly light, allowing it to rest snugly in the ear canal without feeling like a foreign object that might cause soreness after hours of wear.
For nurses working night shifts or anyone dealing with unpredictable schedules, the wired 3.5mm jack connectivity offers a distinct advantage over many modern wireless competitors. There is no charging cable to hunt for before bed, and no risk of the battery dying in the middle of a meditation session or a lullaby track. The inclusion of a built-in microphone and volume controller allows you to manage calls or skip tracks directly from the earbud, making it versatile enough for use during quiet moments in a hospital break room or while commuting on public transit where street noise is a constant factor.
However, this product is not for everyone. Because it uses sound isolation rather than active noise cancellation (ANC), it will not electronically generate anti-noise waves to cancel out low-frequency rumbles like an airplane engine. Instead, it blocks approximately 70% to 90% of outside noise through physical density and a tight seal. If you have very large ear canals, the standard sizing might require adjustment, though the flexible silicone is marketed to accommodate smaller holes as well. It is best suited for those who prioritize total silence through passive blocking and a comfortable, "forget-you're-wearing-it" feel over high-fidelity stereo output or wireless freedom.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-24 · 6 min read · Independent comparison
The Klowcok Replacement Ear Tips serve a very specific, singular purpose: they are a direct compatibility upgrade for users of the Anker Soundcore Sleep A20 and A30 earbuds. If your current earbuds have started to feel loose, if the original silicone has degraded, or if you simply need a different size to achieve a better seal, these tips are the solution. They come in a pack of six pairs, divided into Small, Medium, and Large sizes, giving you the flexibility to find the perfect fit for both ears, which often differ slightly in size.
The material is high-quality silicone, chosen for its durability and ability to be washed. Hygiene is a major concern for anyone sleeping with earbuds, and the fact that these tips are washable makes them a practical long-term investment. They are designed to be lightweight and easy to replace, snapping securely onto the driver units of your Soundcore buds. When you achieve a proper seal, the effective noise blocking improves significantly, which can help you fall asleep faster or block out a snoring partner more effectively.
This product is exclusively for people who already own the compatible Soundcore models. It does not work with generic earbuds or the Ururtm Sleep Soundproof Earbuds. If you buy these expecting a standalone listening experience, you will be disappointed because the package contains only the tips, not the earbuds themselves. It is a maintenance item, not a primary purchase. It is ideal for the nurse who loves her Soundcore buds but finds them uncomfortable after a twelve-hour shift, or for the frequent traveler who wants to ensure her sleep aids maintain their acoustic integrity over time.
• Best for a standalone sleep solution → Ururtm Sleep Soundproof Earbuds. You get the drivers, the wire, and the case in one box, ready to plug into any phone or music player immediately.
• Best for restoring a lost seal on existing buds → Klowcok Replacement Ear Tips. If your Soundcore Sleep A20/A30 feels loose or dirty, these provide a fresh, hygienic barrier.
• Best for side sleepers seeking minimal bulk → Ururtm Sleep Soundproof Earbuds. The entire unit is soft silicone with no hard protrusions, reducing pressure points on the cheekbone.
• Best for customizable fit across multiple ears → Klowcok Replacement Ear Tips. With six pairs in three sizes, you can swap tips to match each ear perfectly, something a fixed-size bud cannot offer.
• Best for wired reliability without battery worries → Ururtm Sleep Soundproof Earbuds. The 3.5mm jack ensures you never face a dead battery issue during a critical moment of relaxation.
• Best for hygiene and longevity of premium gear → Klowcok Replacement Ear Tips. Washable materials allow you to keep your expensive Soundcore drivers clean and functional for years.
• Best for passive noise reduction in noisy environments → Ururtm Sleep Soundproof Earbuds. Designed to block 70-90% of ambient sound through dense silicone construction.
• Best value for budget-conscious buyers starting from scratch → Ururtm Sleep Soundproof Earbuds. You are buying the whole system rather than just an accessory for a system you already own.
After analyzing the specifications and intended use cases, I would buy the Ururtm Sleep Soundproof Earbuds if I were looking for a new device to help me sleep. The complete package, including the soft silicone casing and wired connectivity, offers a reliable, no-fuss experience that is particularly valuable for nurses who need to stay alert during breaks or decompress immediately after a shift without worrying about charging cables or battery indicators.
While the Klowcok tips are excellent for maintaining Soundcore earbuds, they cannot function without the parent device. Unless you already possess the specific Soundcore Sleep A20 or A30 models, the Klowcok product has no utility. The Ururtm option stands on its own as a comprehensive tool for insomnia, travel, and meditation, making it the logical choice for anyone entering the market for sleep-specific audio gear.
No, these rely on passive sound isolation using soft silicone to block 70% to 90% of noise; they do not have electronic active noise cancellation circuitry.
No, they are specifically designed only for the Soundcore Sleep A20 and A30 models and will not attach to other brands or the Ururtm earbuds.
Since they use a wired 3.5mm connection with no internal battery, they do not suffer from battery degradation and can last indefinitely as long as the cable remains intact.
Yes, the Klowcok silicone tips are described as washable, which helps maintain hygiene for regular sleep use.
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