- What is CUIN and why is its value important?
- How is the CUIN value (bulk strength) measured?
- Advantages of high CUIN values (fill power) in down duvets and pillows
- Luxecosy down duvets and pillows: Premium quality with 700-800 CUIN
- Conclusion: CUIN & Fill Power - 700 or 800 CUIN for the best sleep?
1. What does CUIN mean and why is this value important?
The term CUIN (Cubic Inches per Ounce) describes the fill power of down. Simply put, CUIN indicates how much space one ounce of down occupies when fluffed up. A high CUIN value signifies particularly voluminous, airy, and high-quality down – typical of premium qualities such as 700 CUIN or 800 CUIN.
- More volume: Higher fill power (e.g. 700 or 800 CUIN) = more air cushion and better thermal insulation.
- Less weight: Thanks to high bulk, less filling is required for the same heat output with 700 and 800 CUIN.
- Airiness and comfort: High CUIN values ensure particularly soft, airy and snug sleeping comfort.
2. How is the CUIN value (bulk strength) measured?
The CUIN value is determined in standardized laboratory tests by compressing and then releasing a defined amount of down. The resulting volume – i.e., the loft – is measured in cubic inches.
- 700 CUIN: 1 ounce of down occupies 700 cubic inches – very high fill power for high-quality down comforters.
- 750 CUIN: 1 ounce of down occupies 700 cubic inches – very high fill power for high-quality down comforters.
- 800 CUIN: 1 ounce of down occupies 800 cubic inches – exceptionally lightweight premium quality with maximum loft.
Why does the CUIN value vary? The origin, species, and husbandry conditions of the animals significantly influence the bulk and thus the difference between 700 and 800 CUIN.
3. Advantages of high CUIN values (fill power) in down duvets and pillows
3.1 Lightness and volume
High fill power (e.g. 700 or 800 CUIN) means: particularly light yet voluminous – ideal for cozy sleeping comfort.
3.2 Excellent thermal performance
Thanks to their high fill power, down feathers with 700 or 800 CUIN form a particularly large number of air pockets that effectively store heat – perfect for cold nights.
3.3 Breathability and moisture management
High CUIN values promote breathability: moisture is quickly wicked away, ensuring a dry, comfortable sleeping environment.
3.4 Durability and dimensional stability
High fill power down (700–800 CUIN) is more resistant to clumping and retains its volume for many years.
4. Luxecosy down comforters and pillows: Premium quality with 700–800 CUIN
| series | down type | CUIN value | Advantages | Recommendation |
|---|---|---|---|---|
| Luxe Series | Country down (goose & duck) | 700 | Good thermal insulation, lightweight and bulky, good value for money. | Everyday comfort at moderate temperatures |
| Premium Series | Wild duck (eiderdown type) | 750-800 | Excellent thermal performance, high breathability | Cold nights, demanding sleeping habits |
| Pure & Royal Series | Goose down | 800-850 | Extremely soft, excellent insulation | Luxury comfort at a low weight |
| Royal Eiderdown | Eiderdown | 900+ (not measurable) | Maximum thermal insulation, royal comfort | Luxury for cold winter nights |
5. Conclusion: CUIN & Fill Power – 700 or 800 CUIN for the best sleep?
The CUIN value is the key indicator of the quality and loft of down products. Whether 700 CUIN for excellent value or 800 CUIN for maximum lightness – Luxecosy offers a select range of high-loft down duvets and pillows for personalized comfort and long-lasting quality.
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