If you want soft, slow-rebound foam tips for Sennheiser Momentum True Wireless 4, choose Luckvan Memory Foam Ear; if you need washable silicone replacements for JBL Endurance Race TWS, choose Klowcok Ear Tips Replacement. For school, I’d match the choice to the earbuds you already own first, then decide whether foam or silicone better fits your routine.
Luckvan Memory Foam Ear vs Klowcok Ear Tips Replacement at a Glance
• Klowcok’s biggest strength: Nine pairs of washable silicone tips across three sizes for JBL Endurance Race TWS. Trade-off: Its silicone construction is a different fit and feel from Luckvan’s slow-rebound foam.
• Choose Luckvan if you own compatible Sennheiser earbuds and want foam that can settle into the ear canal.
• Choose Klowcok if you own compatible JBL earbuds and prefer replaceable silicone tips in several size options.
Luckvan is a replacement-tip option for Sennheiser Momentum True Wireless 4 earbuds. Its defining feature is the memory foam: the material is described as soft and slow to rebound, so it can compress for placement and then mold to the ear canal. That design may appeal to someone who finds a secure, closely fitted tip more comfortable than a simple silicone-style replacement.
A closer seal has two practical aims here. Luckvan says the foam is intended to help block external noise and support bass response. That can be useful when listening in a school hallway, on a commute, or in another setting where surrounding sound competes with audio. The tips are also described as anti-slip and suitable for long wearing and exercise, though fit will still vary from person to person. The package includes three pairs in small, medium, and large, giving you a few fit options to work with.
The product is designed to fit inside the original charging case, which matters if you do not want to remove the tips every time you put the earbuds away. The foam is identified as polyurethane, and the listing describes it as safe and non-toxic. Installation and cleaning are also presented as straightforward, but the sheet does not give a cleaning method or a specific care schedule.
Who should skip it: Skip Luckvan if your earbuds are JBL Endurance Race TWS, or if you specifically want silicone tips; compatibility is limited to the stated Sennheiser model, and the material is foam.
Klowcok is made for JBL Endurance Race TWS earbuds. Its tips use soft, lightweight silicone, so this is the more direct match for someone who wants silicone replacements rather than a foam tip that conforms to the ear canal. The listing describes the tips as secure-fitting, washable, and durable, which makes them a practical option for regular use when the original tips need replacing.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-19 · 7 min read · Independent comparison
The package contains nine pairs: three pairs each in small, medium, and large. Having those size choices can help when you are trying to find a comfortable fit, or when you want replacement pairs available without relying on a single set. The sheet does not explain whether the different sizes can be used interchangeably across other earbuds, so I would treat them as intended for the JBL Endurance Race TWS rather than as universal tips.
Klowcok also describes its silicone tips as helping block noise. That may be useful for everyday listening, but the product details do not provide a specific noise-reduction figure. Its simpler material choice is the key distinction: washable silicone rather than Luckvan’s slow-rebound memory foam. The earbuds themselves are not included, so this is strictly a replacement-tip purchase.
Who should skip it: Skip Klowcok if you own Sennheiser Momentum True Wireless 4 earbuds or want foam; this set is specified for JBL Endurance Race TWS and uses silicone.
• For Sennheiser Momentum True Wireless 4 → Luckvan Memory Foam Ear. Compatibility comes first: Luckvan specifically names these earbuds.
• For JBL Endurance Race TWS → Klowcok Ear Tips Replacement. Klowcok identifies this JBL model as its compatible fit.
• For foam that molds to the ear canal → Luckvan. Its slow-rebound polyurethane foam is designed to conform and stay secure.
• For washable replacement tips → Klowcok. The silicone tips are described as washable, making that a clear point of difference.
• For three sizes in a nine-pair pack → Klowcok. It includes three pairs each in small, medium, and large.
• For a three-pair foam set in small, medium, and large → Luckvan. It offers the same three named size choices, but fewer pairs overall.
• For a design intended to fit the original charging case → Luckvan. That feature is specifically stated for the Sennheiser-compatible foam tips.
• For noise isolation and a potentially fuller bass seal → Luckvan. The foam is described as forming a close seal that can help block outside sound and enhance bass.
• For a silicone option described as light and durable → Klowcok. That material and use profile may suit someone who prefers a straightforward replacement tip.
Compatibility is the first decision, not a minor detail. These are not two interchangeable sets of ear tips: Luckvan is listed for Sennheiser Momentum True Wireless 4, while Klowcok is for JBL Endurance Race TWS. If your earbuds are a different model, neither product’s listed compatibility establishes that the tips will fit. Check the exact model name before choosing.
Next, think about material and fit preference. Luckvan’s foam is designed to compress and slowly rebound, forming around the ear canal. That may be appealing if you want a close, anti-slip fit and help reducing outside noise. Klowcok’s silicone is described as soft, lightweight, washable, and durable. The sheets do not establish that one material is universally more comfortable or longer lasting, so the better match depends on what feels right to you and how you prefer to maintain replacement tips.
Pack contents can matter if you want multiple spares. Luckvan supplies three pairs in S, M, and L; Klowcok supplies nine pairs, also divided across those three sizes. More pairs do not automatically make one the better choice if it is not compatible with your earbuds, but Klowcok’s larger set does provide more replacement pairs within its stated JBL fit.
Finally, consider the charging routine. Luckvan says its tips fit neatly inside the original charging case, which may be convenient if you keep the tips on the earbuds between uses. Klowcok’s supplied details do not make a corresponding charging-case claim. If that is important, confirm the fit for your exact earbuds rather than assuming a replacement tip will behave the same way in every case.
My Verdict
I would choose Luckvan for school if I owned Sennheiser Momentum True Wireless 4 and wanted foam that molds to the ear canal, with a stated charging-case fit and noise-isolating design. Its three sizes help address fit preferences, while its main limitation is clear: it is not the JBL-compatible option.
If I owned JBL Endurance Race TWS and preferred washable silicone, I’d choose Klowcok instead. The compatibility difference decides this comparison before any general preference for foam or silicone.
The listed compatibility differs: Luckvan is for Sennheiser Momentum True Wireless 4, and Klowcok is for JBL Endurance Race TWS. The product details do not establish cross-compatibility, so match the tips to the exact earbud model.
Luckvan’s foam is described as conforming to the ear canal to help block outside noise. Klowcok also describes its silicone tips as noise blocking, but neither product sheet gives a measured reduction, so the actual result can depend on fit.
Klowcok describes its silicone tips as washable and includes nine pairs: three each in small, medium, and large. The earbuds themselves are not included.
Luckvan offers slow-rebound foam designed for a close, anti-slip seal; Klowcok offers soft, lightweight, washable silicone. Choose based on your compatible earbuds and preferred material, while keeping awareness of your surroundings in mind.
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