Value Village / Clothing

What are the common misunderstandings about storing bags?

This answer is a draft. It stays unpublished until legal review and source verification are complete.

The answerThe biggest misunderstanding is "seal it in its box and a bag and it is safe". In a Japanese home, moisture builds up inside and speeds up mould and the breakdown of synthetic leather. Storage is about "keeping the shape and letting air through", not "sealing".

How to store a leather bag is a question people ask in every country. In Japan there is an extra factor: homes here are humid, and the conditions inside your closet can decide how long a bag lasts. If you have moved here from a drier climate, the habits that worked at home may not work here.

Japanese homes and the conditions for mould

Storage pointReason
Stuff the bag (e.g. paper wrapped in non-woven cloth)Keeps the shape
Keep it in a non-woven (不織布, fushokufu) dust bag, never plasticLets air through
Store on a middle or upper shelf, not the bottom of the closetMoisture collects low down
Take it out of the bag and air it once a monthPrevents damp and mould
Keep dehumidifier packs (calcium chloride, etc.) from touching the bag directlyLeaking liquid causes discolouration
[Verify] Check the humidity figures in the Japan Meteorological Agency's "Historical weather data search" (Tokyo, monthly normals). The timescale of hydrolysis varies by maker and material, so we have avoided a definite number of years.

Misunderstanding 1|The original box is the best place

Cardboard absorbs moisture and then releases it inside the closed box. If you use the box, add a desiccant and open it regularly.

Misunderstanding 2|A plastic bag keeps dust off

Plastic traps moisture. A breathable non-woven dust bag is the standard choice.

Misunderstanding 3|Synthetic leather is tougher than real leather

Synthetic leather (polyurethane) resists water, but hydrolysis caused by humidity gives it a shorter life than real leather. Dry storage does not stop the process, but it can slow it down.

Misunderstanding 4|Leather needs plenty of cream

Too much cream leaves the surface sticky and feeds mould. The basic method is a thin layer, after a dry wipe, tested first on a hidden spot. Cream cannot be used on suede or nubuck.

Misunderstanding 5|Add a moth repellent and you are covered

Some clothing moth repellents (pyrethroid types, for example) can discolour synthetic leather, metal fittings and glitter. Check the "do not use with" section on the product label.

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Sources

https://www.data.jma.go.jp/stats/etrn/view/nml_sfc_ym.php?prec_no=44&block_no=47662

https://www.hokeniryo.metro.tokyo.lg.jp/kankyo/kankyo_eisei/jyuukankyo/indoor/kabi.html

https://www.kokusen.go.jp/

⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.

About this article

What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.

This is general information. Results vary from person to person and depend on your own conditions and surroundings.

Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.

Follow the care label and the maker's instructions for any garment, shoe or bag. For expensive or sentimental items, ask a specialist cleaner or repairer.

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