1. What is CUIN and why is it important?
The term CUIN (cubic inches per ounce) describes the fill power of down. Simply put, CUIN indicates how much space an ounce of down takes up when fluffed up. A high CUIN value means the down is particularly voluminous and fluffy—and therefore of higher quality.
- More volume: Higher CUIN value = more air cushion and better thermal insulation.
- Less weight: Less filling required for the same heat output.
- Airiness and comfort: Soft, airy and cuddly sleeping comfort.
2. How is the CUIN value measured?
The CUIN value is determined in standardized laboratory tests by compressing and releasing a defined amount of down. The resulting volume is measured in cubic inches.
- 700 CUIN: 1 ounce of down occupies 700 cubic inches.
- 850 CUIN: 1 ounce of down occupies 850 cubic inches.
Why does the CUIN value vary? The origin, species, and husbandry conditions of the animals significantly influence the bulk.
3. Advantages of high fill power in down duvets and pillows
3.1 Lightness and volume
High CUIN value = light yet voluminous, ideal for cozy comfort.
3.2 Excellent thermal performance
Many air pockets effectively store heat, perfect for cold nights.
3.3 Breathability and moisture regulation
Fast moisture wicking for a dry sleeping environment.
3.4 Durability and dimensional stability
More resistant to clumping, retains its bulk for years.
4. Luxecosy down duvets and pillows: Premium quality in every series
| series | Down type | CUIN value | Advantages | Recommendation |
|---|---|---|---|---|
| Luxe Series | Land down (goose & duck) | 700 | Good thermal insulation, light and voluminous, good value for money | Everyday comfort at moderate temperatures |
| Premium Series | Wild duck (eiderdown type) | 750-800 | Very good thermal performance, high breathability | Cold nights, demanding sleeping habits |
| Pure & Royal Series | goose down | 800-850 | Extremely soft, excellent insulation | Luxury comfort with low weight |
| Royal Eiderdown | Eiderdown | 900+ (not measurable) | Maximum thermal insulation, royal comfort | Luxury for cold winter nights |
5. Conclusion: The right choice for optimal sleeping comfort
The CUIN value is a crucial indicator of the quality and fill power of down products. Luxecosy offers a select selection of high-fill-power duvets and pillows for personalized comfort and long-lasting quality.
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