{
  "name": "Launderwise Tumble-Dry-by-Fibre Reference",
  "description": "Which fibres can go in the tumble dryer, and at what heat, as a machine-readable table. The dot heat values are GINETEX; the no-tumble fibre rules cite Woolmark, Woolite, RMIT and the rayon manufacturer. An individual garment is always governed by its care-label tumble symbol. Companion to launderwise.com/blog/what-fabrics-can-you-tumble-dry/.",
  "url": "https://launderwise.com/blog/what-fabrics-can-you-tumble-dry/",
  "isBasedOn": "GINETEX dot heat; Woolmark / Woolite / RMIT / Asia Pacific Rayon fibre guidance",
  "count": 7,
  "columns": [
    "Fibre",
    "In the tumble dryer?",
    "The rule"
  ],
  "entries": [
    {
      "fibre": "Cotton",
      "inDryer": "Yes — if the tumble symbol allows",
      "rule": "At the heat the dots show (one dot ~60°C, two dots ~80°C); lower for shrink-prone items",
      "verdict": "yes-if-symbol",
      "source": "GINETEX"
    },
    {
      "fibre": "Sturdy synthetics (polyester, nylon, acrylic)",
      "inDryer": "Yes — if the symbol allows",
      "rule": "Use the lower heat for lightweight or shape-fitted pieces",
      "verdict": "yes-if-symbol",
      "source": "GINETEX"
    },
    {
      "fibre": "Wool",
      "inDryer": "No — dry flat",
      "rule": "Heat, moisture and agitation felt it; shrinkage effectively irreversible (Woolmark)",
      "verdict": "no",
      "source": "Woolmark"
    },
    {
      "fibre": "Silk",
      "inDryer": "No — air-dry away from heat",
      "rule": "Air-dry rather than tumble (Woolite)",
      "verdict": "no",
      "source": "Woolite"
    },
    {
      "fibre": "Spandex / elastane",
      "inDryer": "No",
      "rule": "Dryer heat permanently kills the stretch (RMIT)",
      "verdict": "no",
      "source": "RMIT"
    },
    {
      "fibre": "Viscose / rayon",
      "inDryer": "No — dry flat or hang",
      "rule": "The manufacturer's drying method is to air-dry (APR)",
      "verdict": "no",
      "source": "Asia Pacific Rayon"
    },
    {
      "fibre": "Crossed-out tumble symbol",
      "inDryer": "No — air-dry",
      "rule": "Binding, whatever the fibre (GINETEX)",
      "verdict": "no",
      "source": "GINETEX"
    }
  ]
}