Leather and freezer: what they have in common
- Step 1. Leather — is material for — Bag. Leather.
- Step 2. Bag — has part — Zip. A zip.
- Step 3. Zip — is part of — Wetsuit. A zip on the back.
- Step 4. Wetsuit — uses — Thermal insulation. Insulation.
- Step 5. Thermal insulation — is part of — Freezer. Polyurethane foam in the walls.