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6.6 mm (0.26 in), written down

MUINS 88 Key Keyboard Case

An 88-key case that publishes what is actually inside it: 6.6 mm (0.26 in) of foam on all six sides, a 600D Oxford shell, a stated interior of 53.5 by 13 by 6.7 inches, and three external compartments.

MUINS 88-key keyboard case with backpack straps and front pockets

MUINS 88 Key Keyboard Case

An 88-key case that publishes what is actually inside it: 6.6 mm (0.26 in) of foam on all six sides, a 600D Oxford shell, a stated interior of 53.5 by 13 by 6.7 inches, and three external compartments.

Padding
6.6 mm (0.26 in) foam on all six sides — the only keyboard case on this shelf that publishes a thickness. Another page here sets the scale: 8 to 12 mm (0.31 to 0.47 in) handles ordinary transport, so this sits just below that band (maker’s bullet)
Interior
53.5 × 13 × 6.7 in stated, with room for a music stand under 16 in, sheet music, power adapters, a metronome, pedals and cables (from the title and maker’s bullet)
Shell
600D Oxford fabric, which MUINS states is three times more durable than standard materials — the maker’s claim, and the lower of the two fabric weights published on this shelf (maker’s bullet)
Outside pockets
Three — one large and two small. The most external storage published on this shelf (maker’s bullet)
Carrying
Backpack mode with wide anti-slip padded straps, plus a reinforced briefcase handle with extra padding (maker’s bullet)
Closure
Heavy-duty two-way zippers, with reinforced stress points and a wide opening (maker’s bullet)
Included
A removable key-name sticker set and a music page holder. The only case on this shelf that includes anything else (maker’s bullet)
External size
MUINS puts nothing in writing on this. The product record gives 1,400 × 450 × 170 mm (55.1 × 17.7 × 6.69 in), and the stated interior is the only figure the maker publishes — which is the reverse of what this shelf asks for
Load rating
MUINS puts nothing in writing on this. No case on this shelf states what its straps will carry
Manufacturer reference
piano bag — a description rather than a code, which is how the maker publishes it
Weight
1,179 g (41.6 oz) in the product record
Amazon reference
B0F2Z9KBRV
EAN
0797606807842
  • A published foam thickness on all six sides — the only keyboard case here that gives one at all
  • Three outside pockets and a stated interior, so the pedal and the adapter travel with the instrument
  • 6.6 mm (0.26 in) is below the 8-to-12 mm band another page on this shelf calls ordinary transport

Best for: An 88-key stage piano that travels by car with its pedal, adapter and music in the same bag.

Check price on Amazon

Specifications

Padding
6.6 mm (0.26 in) foam on all six sides — the only keyboard case on this shelf that publishes a thickness. Another page here sets the scale: 8 to 12 mm (0.31 to 0.47 in) handles ordinary transport, so this sits just below that band (maker’s bullet)
Interior
53.5 × 13 × 6.7 in stated, with room for a music stand under 16 in, sheet music, power adapters, a metronome, pedals and cables (from the title and maker’s bullet)
Shell
600D Oxford fabric, which MUINS states is three times more durable than standard materials — the maker’s claim, and the lower of the two fabric weights published on this shelf (maker’s bullet)
Outside pockets
Three — one large and two small. The most external storage published on this shelf (maker’s bullet)
Carrying
Backpack mode with wide anti-slip padded straps, plus a reinforced briefcase handle with extra padding (maker’s bullet)
Closure
Heavy-duty two-way zippers, with reinforced stress points and a wide opening (maker’s bullet)
Included
A removable key-name sticker set and a music page holder. The only case on this shelf that includes anything else (maker’s bullet)
External size
MUINS puts nothing in writing on this. The product record gives 1,400 × 450 × 170 mm (55.1 × 17.7 × 6.69 in), and the stated interior is the only figure the maker publishes — which is the reverse of what this shelf asks for
Load rating
MUINS puts nothing in writing on this. No case on this shelf states what its straps will carry
Manufacturer reference
piano bag — a description rather than a code, which is how the maker publishes it
Weight
1,179 g (41.6 oz) in the product record
Amazon reference
B0F2Z9KBRV
EAN
0797606807842

Six point six millimeters of foam on all six sides. 600D Oxford. A stated interior of 53.5 × 13 × 6.7 inches. Three outside pockets, one large and two small. Backpack straps and a padded briefcase handle. Two-way zippers. $37.98.

The first of those is why this page exists. It is the only keyboard case on this shelf that publishes a padding thickness at all. The other four say padded, or thick padding, and leave it there — which tells a reader nothing, because the whole question on this shelf is how much.

And the figure is modest, so it gets reported as it is. Another page here publishes the scale: under about 5 mm (0.20 in) is a dust cover, 8 to 12 mm (0.31 to 0.47 in) handles ordinary transport, and an aircraft hold needs a hard shell. 6.6 mm (0.26 in) is just below that band. What lifts it is the words on all six sides — including the bottom, which is where a case set down in a hurry actually takes the hit, and which is the panel most bags quietly leave thin.

The three outside pockets are the second reason, and they answer a real problem rather than a specification. An 88-key piano does not travel alone: it travels with a sustain pedal, a power adapter, a cable and some sheet music, and the stated interior has room for a music stand under 16 inches as well. One large pocket and two small ones is the most external storage published on this shelf, and it is the difference between one bag and three.

Both carrying modes are published too — padded backpack straps for the walk, a reinforced briefcase handle for the car park — where the two DGX-670 bags on this shelf publish a single shoulder strap.

Two things are not published, and both matter. The external size: the maker gives the interior, and this shelf asks for the outside, because that is what decides whether the packed case goes in a boot. And the load rating, which no case on this shelf states.

The manufacturer reference reads piano bag. That is how it is published, and it makes a reorder in two years a matter of luck.

The product record gives 1,179 g (41.6 oz), and the box in the record measures 1,400 × 450 × 170 mm (55.1 × 17.7 × 6.69 in).

Availability

Read on the day this page was built: $38 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

The questions players ask

Is 6.6 mm (0.26 in) of foam enough?

It is the honest middle, and this page will not dress it up. The scale published elsewhere on this shelf puts under about 5 mm (0.20 in) in dust-cover territory and 8 to 12 mm (0.31 to 0.47 in) at ordinary transport — a car, a bus, a walk to a lesson. 6.6 mm (0.26 in) sits just under that band. What makes it count for more than the number suggests is that it is stated on all six sides, including the bottom, where a bag set down hard takes the impact. It is also the only figure of its kind on this shelf: the other keyboard cases here say *padded* and *thick* and publish nothing. A stated 6.6 mm (0.26 in) is more use to a reader than an unstated *thick*.

Will it fit my digital piano?

Measure, then compare against the published interior: 53.5 × 13 × 6.7 inches. Most 88-key portable pianos are around 52 inches wide and 11 to 12 deep, which leaves a margin — but keyboards with a built-in speaker cabinet or a thick rear panel run deeper than the nominal figure, and 6.7 inches of internal height is the dimension that will decide it. What MUINS does not publish is the external size, which is what the shelf asks for and what decides whether the packed case goes in a boot. The product record gives 1,400 × 450 × 170 mm (55.1 × 17.7 × 6.69 in); treat that as a package measurement, not a fitted one.

Instruments it is stated to fit

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    Amazon reference
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Elsewhere in the cupboard

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