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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 6 min read · Independent comparison
• VISOOM's biggest strength: a soft, thin silicone shell with a detachable stainless steel keychain, so your charging case stays scratch-free and attached to a belt or bag.
• VISOOM's biggest trade-off: it's silicone and explicitly not water resistant, and it only fits the Galaxy Buds 3 / Buds 3 Pro (2024).
• CaseSack's biggest strength: a semi-hard EVA shell with a mesh pocket and an elastic strap that holds the charging case in place — real protection for travel.
• CaseSack's biggest trade-off: it's a carry case, not a skin — you'd pull the earbuds out to charge, and it only fits the Bose Ultra Open Bluetooth Earbuds.
• Pick VISOOM if you want everyday drop-and-scratch protection plus a personal look on your Galaxy Buds charging case.
• Pick CaseSack if you want to protect and organize the Bose charging case and small accessories inside a bag or suitcase.
Think of the VISOOM as a second skin for your charging case rather than a box you store it in. It's built specifically for the Samsung Galaxy Buds 3 and Galaxy Buds 3 Pro (2024), so the fit is cut around that shape. The silicone is light and thin to the touch, and the point is impact and scratch resistance — the everyday stuff like a case sliding across a desk or knocking against keys in a pocket.
The detail I like most is the charging access. The design lets you charge from a wireless charger or through the bottom port without removing the cover. That's the whole reason a silicone case works day to day: you don't have to treat it as something you take off at night. On top of that, there's a detachable stainless steel keychain with a five-leaf clover design, so you can hook the case to your keys, a belt, or a larger bag when you're out or moving. A screen protector is included too.
Who should buy it: someone with Galaxy Buds 3 or Buds 3 Pro who wants cheap-feeling protection to feel personal and who likes the idea of a charm on their case. The color range is aimed at people who treat accessories as fashion — VISOOM positions it as a gift for women and girls for birthdays, Valentine's, Mother's Day, Christmas and similar occasions.
Who should skip it: anyone who needs real weather protection. VISOOM lists the water resistance level as not water resistant, so this is not the one for rain, sweat-soaked gym bags, or beach trips. It's also a poor fit if you own any earbuds other than the Galaxy Buds 3 line — the shape simply isn't made for them.
The CaseSack is a different animal entirely. It's a semi-hard EVA carrying case made for the Bose Ultra Open Bluetooth Earbuds, and the name tells you the intent: keep the earbuds, the charging case, and small accessories organized together. It's compact, light, and shaped to fit a purse, shoulder bag, or suitcase — so it's as much about home storage as it is about travel.
Protection is the headline. The semi-hard shell guards against shock, shake, and scratches, and the PEVA materials absorb pressure and hits while being water resistant. Inside, an elastic strap secures the device in the base so it doesn't slide around, and there's a mesh pocket in the lid for accessories. That strap-and-pocket combo is what separates it from a plain pouch: everything has a home.
Who should buy it: someone carrying Bose Ultra Open earbuds who wants a single, tidy place for the charging case and a cable or two, and who wants a shell that shrugs off being jostled in a backpack. If you've ever fished a loose charging case out of a bag, this is the fix.
Who should skip it: anyone expecting a skin that stays on the charging case. This is a case, not a cover — CaseSack states plainly that the package includes only the carrying case, and the device and accessories are not included. It also won't fit Galaxy Buds or any other brand, since it's cut for the Bose Ultra Open. And if you like to charge wirelessly without unpacking anything, a soft sleeve-style cover suits you better than a semi-hard box.
Side-by-Side: Which Should You Choose?
• Best for scratch and drop protection on the case itself → VISOOM Silicone Earbuds Case. The silicone is impact-resistant and scratch-proof, and it stays on while you charge.
• Best for travel and bag organization → CaseSack Bose. Semi-hard shell, elastic strap, mesh pocket, and it fits a purse, shoulder bag, or suitcase.
• Best for weather and moisture resistance → CaseSack Bose. It's water resistant; VISOOM's is not water resistant at all.
• Best for carrying extras → CaseSack Bose. The lid pocket is made for small accessories, while VISOOM adds a keychain instead.
• Best for a personal, giftable look → VISOOM Silicone Earbuds Case. Multiple colors plus a bling five-leaf clover keychain.
• Best for attaching to keys or a belt → VISOOM Silicone Earbuds Case. The detachable stainless steel keychain is the point.
• Best for protecting the charging case during storage at home → CaseSack Bose. It's designed for home storage as well as carrying.
In my opinion, the deciding question is whether you're protecting a thing you carry on you or a thing you pack away. If your Galaxy Buds 3 or Buds 3 Pro charging case lives in your pocket or on your keys, I'd buy the VISOOM — the on-case protection and the charge-without-removing-cover design make it the more practical daily pick. If your Bose Ultra Open charging case lives in a bag or suitcase, I'd buy the CaseSack, because a soft skin won't stop it from being crushed or soaked. I'd lean VISOOM overall only because it works while it's on, but the CaseSack is the better traveler. Either way, check the current price on Amazon before you commit.
how to charge earbuds case
It depends on the case. If you're using the VISOOM silicone cover, you can charge the Galaxy Buds 3 / Buds 3 Pro charging case from a wireless charger or through the bottom charging port without taking the cover off. With the CaseSack, you'd take the charging case out of the semi-hard shell first, then charge it as you normally would.
how to charge case without earbuds
The charging case itself charges the same way whether or not the earbuds are inside — you're just topping up the case's own battery. The VISOOM design specifically allows charging from a wireless charger or the bottom port with the cover still on, so you don't need to remove it. The CaseSack is only a storage shell, so it plays no part in charging either way.
how to charge jlab earbuds case
Neither product here is made for JLab. The VISOOM fits the Samsung Galaxy Buds 3 and Buds 3 Pro (2024), and the CaseSack fits the Bose Ultra Open Bluetooth Earbuds. For a JLab case, you'd need a cover or carry case sized for that model, and you'd charge it through its own port as usual.
how to charge apple earbuds case
Same answer: the VISOOM and CaseSack aren't compatible with Apple charging cases. VISOOM is cut for Galaxy Buds 3 / Buds 3 Pro, and CaseSack is cut for Bose Ultra Open. Apple cases need their own accessories — though the VISOOM's charge-without-removing approach is a good example of what to look for in a silicone cover for any brand.
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