Hollowfiber vs Synthetic Down: Plush Toy Filling Materials Compared
Filling material determines a plush toy's weight, huggability, and how well it survives repeated washing — and the three materials used across most wholesale production (hollowfiber, synthetic down, and loose cotton wool) differ measurably on all three counts.
Hollowfiber (siliconized polyester fiber)
Hollow polyester fiber with a hollow core, coated with silicone to reduce clumping. Standard fill density for a medium plush toy (30-40cm) is 400-600 g/m³ depending on desired firmness. Hollowfiber is the most common industrial filling because it is machine-washable at 30-40°C, dries in under 2 hours, and recovers its loft (springs back to shape) after 15-20 wash cycles when properly siliconized. It is also hypoallergenic by nature — no organic material for dust mites or mold to colonize.
Synthetic down (microfiber, "sintepukh")
A finer, more compressed synthetic fiber engineered to mimic the softness of natural down without the allergen risk of feathers. Feels noticeably softer to the touch than hollowfiber and gives a "flatter, huggable" drape rather than hollowfiber's springy volume — favored for flat comfort toys, blankets-with-a-head, and character plush meant to be carried rather than displayed. Compresses faster under repeated hugging than hollowfiber; expect noticeable loft loss after 8-12 wash cycles.
Loose cotton wool
Rarely used in modern wholesale production due to cost and performance — it absorbs moisture (slow drying, mold risk if not fully dried), flattens permanently after 5-8 washes, and costs more per kg than polyester fiber. Still found in some artisanal/heritage-style toys where "natural filling" is the selling point, but not standard for retail plush lines.
Foam beads (microbead filling)
Small expanded polystyrene or polypropylene beads (typically 3-6mm) used in weighted plush and bean-bag-style toys for a "settle in your lap" feel. Restricted to 3+ age labeling under EN71/GOST because loose beads under 5mm are a choking/inhalation hazard if the inner shell tears — reputable manufacturers use a double-stitched inner bag plus the outer shell as two independent barriers.
Comparison table
| Filling | Typical density | Wash cycles before flattening | Cost/kg (wholesale) |
|---|---|---|---|
| Hollowfiber (siliconized) | 400-600 g/m³ | 15-20 | $2.80-3.60 |
| Synthetic down | 350-500 g/m³ | 8-12 | $3.20-4.10 |
| Cotton wool | 300-450 g/m³ | 5-8 | $3.90-5.20 |
| Foam beads | N/A (by weight) | N/A | $1.60-2.40 |
Choosing for a wholesale order
For a retail line meant to be machine-washed regularly (which is what most parents expect for baby comfort toys), siliconized hollowfiber at 500+ g/m³ is the safest default — best durability-to-cost ratio and inherently hypoallergenic. Reserve foam beads for 3+ novelty lines only. See filling specs per SKU in our catalog, or contact us to request a custom fill density for a wholesale order.
FAQ
What filling holds its shape longest after washing?
Hollowfiber with a silicone spiral treatment, filled at 500+ g/m³ density, recovers its loft after 15-20 machine washes.
Is foam bead filling safe?
Only for 3+ toys with a reinforced double-stitched inner shell.