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I don't know what kind of sponge you mean by hard sponge. Sponges are divided into three types: low, medium and high density, and high-density sponges have good resilience and high comfort. It is recommended to choose a high-density sponge when purchasing.
This varies from person to person, some people prefer a harder sofa similar to CBD, while others prefer a softer one. So this kind of goodness depends entirely on personal hobbies!
I don't think it's good to make a sofa with down, one is that it is not elastic, and the other is that it is not resistant to sitting, and after a long time, the down will break. In fact, it is just a selling point of the merchant.
Soft good·· Like a fabric sofa, there are many models, the quality is also OK, and the price is moderate
It's easy to break, and that's how the sofa in my brother's house is, and it didn't break in a year.
Of course, the down sofa is good, the sponge sofa will collapse after a long time, the down sofa is different, the cushion of the Yufan sofa adopts a sandwich-style three-dimensional structure, simply put, the middle layer is a sponge, and the surrounding is a down structure, the most beneficial of such a structure is that it can not only achieve the best comfort of the sofa, but also ensure that the sofa will not be deformed even if it is done for a long time, many brands promise that their sofa will not collapse in 10 or 20 years, and the Yufan sofa will not collapse for life!