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April 09, 2019

Baffle Box Construction & Sewn-through Construction

So you want a new comforter and one that’s going to keep you warm and cool through those cold nights? You’re in the right place! Apart from the key essentials to keep in mind before you head out on your search for bed-bound goose down comforter (the type of fill, filling weight and fill power), there’s another often-overlooked detail to pay attention to when on the lookout for the perfect comforter: the construction. There are two main types of comforter construction that we’re going to be taking a look at, today, and those two types are “baffle box” and “sewn-through” construction.

What is a baffle box construction?

Baffle Box Construction is essentially a thin strip of fabric sewn between the top and the bottom cover of the comforter, which creates a 3D chamber that helps to evenly distribute the fill and allow it to loft more fully, meaning the warmth in the blanket is spread over your body more evenly and helps prevent you getting too hot during sleep.


What are the benefits of the baffle box?

  • Traps more air and prevents heat loss
  • Keeps the inner filling from shifting
  • Improves breathability and warmth of comforter
  • Eliminates cold spots


What is sewn-through construction?

Sewn-through construction is just what it sounds like. The top and bottom cover are sewn together, creating sealed “pockets” that prevent the fill from shifting.

Puredown lightweight down comforter, sewn through construction

Which one should I choose?

Now we’ve cleared up the definitions between baffle box and sewn-through construction, but which one is better? Here’s the thing, they both serve different purposes and have different advantages depending on the situation. The science of sleep isn’t as simple as it sounds!



Both of the baffle box construction and sewn through styles can make sure the fill is properly distributed and prevent it from shifting. With its  3D chambers, the baffle box construction can trap more air and prevent heat loss, so it is more commonly used in winter comforters. If you tend to get cold often during sleep or live in a colder region, a baffle box comforter will be a great choice.

Regarding sewn-through construction, as the two covers are sewn together, this style doesn’t provide as much room for the inner fill compared with the baffle box construction. This also means that sewn-through comforters can't trap as much air than a baffle box style comforter. However, this won’t be an issue for folks who have no problems keeping warm during sleep, or who live in a warmer region.

The Final Thoughts of Baffle Box & Sewn-Through

We hope this brief little 101 on down construction styles. Now you should have a good idea of what to expect when making your next sleep-related purchases! If you think this helped you out in any way, feel free to let us know! If you any more questions about down, our products, our history, or just want to ask us what our favorite pizza topping is, simply head over to our Facebook channel and join our growing community of down enthusiasts!

At Puredown, we’re always on hand to answer any questions from our community and we take pride in helping out all of those who are new to the benefits of down textiles for a superior level of sleep comfort. So next time when you purchase comforters, you will know how to identify these two different constructions and what to expect from them.

Puredown. #Sleeponit

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