Trainers
Not a surface but a glued assembly, which is why the manufacturer's answer to the washing machine is no at every temperature.
What not to do
Machine washing is unsafe on Trainers
Unsafe
Do not do this. The risk is established, and it is described below.
The maker refuses it at every temperature, and the damage is to the adhesive and the foam rather than to the surface — which is why the shoe looks fine afterwards and stops behaving as it did.
Evidence
Strongly supported
Sources
Can I Put Shoes in the Washing Machine?
Altra Running (VF Corporation) · Manufacturer documentation
Relied on for: That the maker advises against the washing machine, that the cycle breaks down the glue, foam and mesh forming the internal structure, that a hot wash reaches around 130°F or hotter, and that the consequence is loss of structural integrity. (states this directly)
Tumble drying is unsafe on Trainers
Unsafe
Do not do this. The risk is established, and it is described below.
Direct heat is named separately from the wash. Air drying, out of direct sunlight, stuffed to hold the shape.
Evidence
Supported
Sources
Can I Put Shoes in the Washing Machine?
Altra Running (VF Corporation) · Manufacturer documentation
Relied on for: That shoes must not be exposed to direct heat while drying, and that the maker's instruction is to air dry away from direct sunlight. (states this directly)
Unsafe
Do not do this. The risk is established, and it is described below.
The instruction is to hand-clean without soaking. Water reaching the adhesive bond is the failure, and submersion is how it gets there.
Evidence
Supported
Sources
Can I Put Shoes in the Washing Machine?
Altra Running (VF Corporation) · Manufacturer documentation
Relied on for: That the whole shoe must not be soaked in water. (states this directly)
Start here
What this is, what tends to go wrong with it, and what to do about it.
Which part are you cleaning?
These parts take different answers. Cleaning one the way you clean another is a common way to damage this.
- Trainer upper
The only part of a trainer whose material changes the answer, and the part people cannot usually name.
Suede, Nubuck, Polyester
Things not to use here
- Trainer midsole
The part that fails in a washing machine, and the part nobody was trying to clean.
Things not to use here
What tends to go wrong
The one stain where the first move is mechanical and the chemistry barely matters — and where the folk advice to let it dry first is not what the trade body says.
The science behind this: Why made-up objects fail where they are glued
In detail
The question people ask about trainers is whether they can go in the washing machine, and a manufacturer answers it directly: they should not, at any temperature. The reason is worth more than the verdict. A trainer is held together by adhesive, and the machine breaks down the glue, the foam and the mesh that form its internal structure — a hot cycle soaks it at around 130°F or hotter, so heat does as much damage as the water. That makes a trainer an assembly rather than a surface, which is why no single answer covers the shoe as a whole: the upper decides the method, and a mesh upper and a suede one want opposite treatment. The hand method the same maker gives is a sequence rather than a product — laces and insoles out and done separately, loose dirt brushed off dry, hand washing in warm water with mild soap, the soap rinsed out properly, then air drying away from direct sunlight and any direct heat, stuffed with newspaper to hold the shape. Whether bleach whitens a white trainer or yellows it permanently is a question no authoritative source answers either way.
Why
- Trainers is explained by Why made-up objects fail where they are glued
Related
- Trainers has the component Trainer upper
- Trainers has the component Trainer midsole
- Trainers is commonly affected by Mud
Sources for this page
Sources
Can I Put Shoes in the Washing Machine?
Altra Running (VF Corporation) · Manufacturer documentation
Relied on for: That the maker advises against the washing machine at any temperature, that the mechanism is breakdown of the glue, foam and mesh forming the internal structure, that a hot wash is around 130°F or hotter, that the shoe must not be soaked or dried with direct heat, and the hand sequence it gives instead. (states this directly)
Shoe Care Tips: Nubuck and Suede
KEEN Footwear · Manufacturer documentation
Relied on for: That a suede or nubuck upper is brushed rather than washed, because water damages the nap. (states this directly)