A sneaker examined part by part
On Earthbound’s ERILO, the outside is wool and the insole uses cork. The Croatian brand’s Core range makes its design choices easier to assess by naming what each part does, including where it still uses synthetic materials.
In practice. The maker lists wool on the outside of ERILO and hemp, wool and cork inside. Earthbound’s cork insoles can be removed and replaced.
What to keep in view
The drawing separates the removable cork insole from the other layers for explanation. The position and thickness of the layers are schematic.
Which part does which job?
The wool exterior is the surface that meets the weather. Inside, the removable cork insole is a part the wearer can take out or swap without taking the shoe apart. The outsole is the part that takes the repeated contact with the street.
Where the parts meet
Earthbound identifies synthetic glue and polyester thread as the non-bio-based components in its material claim. The maker says both are used for strength and durability. Those details matter because the materials list tells you what goes into the shoe, while the way the parts are joined affects what can be taken out again.
A removable insole is a concrete feature a buyer can use. Recycling the assembled shoe is a separate question that depends on an actual collection and processing route.
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