Description
The JVC Marshmallow line has existed since the wired era, and the name has always referred to one thing: memory foam ear pieces instead of silicone tips. This true wireless version keeps that idea, supplying both silicone and memory foam earpieces in the box alongside Bluetooth 5.3, three on device sound modes, an IPX4 rating and a compact charging case. The listing went live on April 14, 2023, and at the point this data was captured it carried 250 ratings averaging 4.1 out of 5, ranked 6,200th in Electronics and 763rd in Earbud and In-Ear Headphones. This is a new unit, not a renewed or refurbished one.
Why memory foam is the specification that matters here
Seal decides perceived bass on every sealed earbud, and it decides how much ambient noise reaches you. Silicone tips seal by pressing outward against the canal wall, which works if the tip diameter matches your ear and fails if it does not. Memory foam works differently: it compresses, goes into the canal and then expands to fill whatever shape it finds. That tolerance for irregular ear canals is why foam is the standard in stage monitoring, and it is the reason to consider these over an equivalently specified rival.
The trades are real too. Foam needs replacing every few months as it loses its rebound, it holds moisture during exercise more than silicone does, and inserting it correctly takes a moment of learning. The listing does not say whether replacement foam tips are available separately, which is worth confirming.
There is a contradiction in the tip counts worth naming. The listing title advertises “S/M/L Memory Foam Earpieces”. The product description says the customizable fit comes from “S/M/L silicon and S/M memory foam earpieces”, which is three silicone sizes and two foam sizes. Those are different claims about what arrives in the box. Ask the seller which is correct if the foam sizing matters to you.
Connection: Bluetooth 5.3 and no codec
JVC states Bluetooth 5.3 with a range of 33 feet, about 10 meters, and automatic connection when the buds leave the case. Bluetooth 5.3 governs connection stability, power consumption and LE Audio groundwork, and it does not improve sound quality on its own.
No codec is named anywhere on the page. SBC is the universal baseline and is what you should assume you are getting. AAC, which matters on iPhones, is not stated, and neither aptX nor LDAC is stated, both of which need the phone and the earbuds to support them before they change anything. Multipoint is not mentioned. There is no companion app described, which is consistent with the three sound modes living on the buds themselves.
Those three modes, Normal, Clear and Bass, are the extent of the tuning control, and they switch from the earbuds rather than from software. That is a modest feature set but a durable one, since it does not depend on an app remaining supported. Noise control is listed as sound isolation, so there is no active noise cancellation here and none is claimed. What isolation you get comes entirely from the foam or silicone seal, which brings the fit discussion above back to the center of the product.
Battery: three figures, and they do not agree
This is the weakest part of the listing and it needs laying out exactly as published. The listing title says 28 hours of playtime. The product description says the compact charging case delivers “an impressive 22 hours of playback”. The specification table records Battery Life as 28 hours and the carrying case average life as 6 hours.
The most coherent reading is that the buds run about 6 hours, the case adds about 22, and the combined total is 28. That would mean the 6 hour figure in the case field is actually the bud runtime, and the 22 hour figure is the case contribution, with both landing in the wrong places. But that is inference and we will not publish it as a specification. What you can say for certain is that no figure on this page is unambiguously labeled as the bud runtime, which is the number that governs your day. Ask before ordering. The case charging time is given as 2 hours, and all quoted playtimes assume moderate volume on a new cell.
One field to treat with care: the components list mentions a “Wireless Charging Case”, while nothing else on the page mentions Qi charging. On listings of this kind that phrase is frequently a rendering of “charging case for wireless earbuds”. Confirm if inductive charging is a requirement.
The water rating, and the word the listing uses for it
The rating is IPX4, which is stated as a code in the title and is the correct way to publish it. IPX4 covers splashing water from any direction, which in practice means sweat and light rain. The description then calls the design “rainproof”, and that word does more work than the code supports: IPX4 is not tested against sustained rain, it is not an immersion rating, and it will not survive a shower, a pool or being rinsed under a tap. We are naming that gap rather than repeating the adjective. No IP rating covers seawater or pressurized water, and ratings degrade with age and sweat exposure, which on a foam tipped product that absorbs moisture is worth keeping in mind.
The specification table also records the water resistance level as “Water Resistant” with the code stripped out, and gives an item weight and a case weight of exactly the same 1.44 ounces, which cannot both be right. Read the title for the code and treat the rest of the table as approximate.
What to compare it against
If foam tips are the appeal, the JLab JBuds Air ANC, which includes foam tips alongside gel tips and stability fins supplies the same idea with active cancellation and a much clearer battery disclosure. For a similarly priced set with a longer track record and a published bud runtime, the TOZO T10, a long serving budget model with a published water code is the standard alternative, and the Soundcore Life A1, which adds an app and an equalizer gives more tuning control. If the compact case is what draws you, the Skullcandy Dime, one of the smallest sets in this catalog takes that idea further. Our wider coverage sits under earbud headphones and wireless earbuds.
Who should buy it and who should not
Buy the Marshmallow if silicone tips have never sealed properly in your ears and memory foam is the fix you have been looking for, and if three on device sound modes are enough tuning control. Do not buy it if you need a clearly stated bud runtime, because the listing publishes three battery figures that do not agree. Do not read IPX4 as rainproof or waterproof. And do not expect noise cancellation, because there is none and none is claimed.
