What are the common misunderstandings about storing shoes?
This answer is a draft. It stays unpublished until legal review and source verification are complete.
In Japan you take your shoes off at the door, so they gather in the genkan (entrance hall) and storing them is an everyday problem. Add the humid climate, and it is no surprise that people here share a great many tips for making shoes last.
What to go by
| Item | Guide | Why |
|---|---|---|
| After wearing | Dry overnight somewhere well ventilated (do not put them straight into the shoe cabinet) | Feet are generally described as giving off about a cup of sweat (roughly 200 mL) a day |
| Rotation | Do not wear the same pair on consecutive days | The damp never fully leaves |
| Shoe cabinet | Dehumidifier packs (silica gel, etc.); open the doors regularly | Kept shut, humidity climbs above 70% |
| Long-term storage | Clean them, dry them, wrap in newspaper or non-woven fabric. Shoe trees keep the shape | Mould, loss of shape |
| Synthetic leather and trainer soles | Hydrolysis within a few years (it progresses even when unworn) | The nature of polyurethane |
- Mould thrives at humidity of 70% or more and 20–30°C. A shoe cabinet by the front door comes close to those conditions once rainy-day shoes go in.
- If leather gets wet, stuff it with newspaper and dry in the shade; apply cream once dry. Hairdryers and direct sun stiffen leather.
[Verify] The sweat figure is a general physiology statement. Check the mould conditions in the Tokyo Metropolitan Government Bureau of Public Health material.
Misunderstanding 1｜The box they came in is the best place to keep them
Cardboard absorbs moisture and releases it again. If you use the box, add a desiccant and open it regularly, or use a case with ventilation holes.
Misunderstanding 2｜Sealed in a plastic bag, they cannot go mouldy
The opposite is true. The damp is trapped inside. A non-woven bag or a breathable cloth is the basic choice.
Misunderstanding 3｜Trainers do not deteriorate if you never wear them
The polyurethane in the sole hydrolyses even when unworn. That is why trainers crumble a few years after being put away. Wearing them now and then, and storing them somewhere dry, can slow this down but cannot stop it.
Misunderstanding 4｜Cream leather shoes as soon as they are dry
Applying cream before wet leather has dried right through traps the moisture and causes mould. Only once fully dry, and thinly.
Misunderstanding 5｜A shoe-cabinet deodoriser also removes damp
Deodorisers and dehumidifiers are different things. For damp, use silica gel or calcium-chloride types (除湿剤, joshitsuzai); for smells, activated charcoal and the like. Once the damp goes, the smell often lessens too.
---
Sources
- Tokyo Metropolitan Government Bureau of Public Health, "Preventing mould" [カビの発生を防ぐには]
https://www.hokeniryo.metro.tokyo.lg.jp/kankyo/kankyo_eisei/jyuukankyo/indoor/kabi.html
- Japan Leather and Leather Goods Industries Association (JLIA), "Caring for leather goods" [革製品のお手入れ]
https://www.jlia.or.jp/
- National Consumer Affairs Center of Japan, "Deterioration of synthetic leather products (hydrolysis)" [合成皮革製品の劣化（加水分解）]
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.
Sources
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