EVERYDAY MATERIALSAtlas
Material behaviour

Elasticity & recovery

Deform, then return.

What it means

Elastic deformation reverses when a load is removed. Elastomers can undergo large recoverable strains because their molecular networks change shape. Foam adds cell geometry to that behaviour. Repeated loading, time, temperature and ageing can reduce recovery; a soft material is not automatically a durable spring.

Look for it in everyday life.

A shoe midsole compresses repeatedly; a gasket maintains a seal while squeezed.

Meet it in a material.

LDPE

Branching makes a familiar flexible film.

Polymers

Polypropylene

A moulded hinge that bends again and again.

Polymers

Polyurethane

The chemistry behind both cushioning and tough surfaces.

Polymers

Silicone

A flexible seal built on a silicon–oxygen backbone.

Polymers

EVA

The link between a cushioned step and a protected solar cell.

Polymers

Natural rubber

Tree latex becomes a resilient engineered material.

Natural materials

Wool

Crimped fibres hold a pocket of air.

Natural materials

Cork

A springy material harvested from bark.

Natural materials

Flax / linen

A stem’s supporting fibres become linen.

Natural materials

EPDM rubber

A flexible seal for weather and water.

Polymers

Elastane / spandex

A small thread that changes how a fabric moves.

Polymers

Follow the evidence

Original explanations informed by the sources below. Technical and industry sources support material behaviour; industry environmental marketing is not treated as a universal comparison. Read our editorial method.