---
title: "#10 All about down sleeping bags – myths, choosing one, specs, care, and innovation – Jan Haráč"
description: "We took a thorough look at all the parameters of down and fabrics, and at choosing a sleeping bag. We mentioned the most common myths and touched on questions like hydrophobic down and testing."
canonical_url: "https://gramino.com/blog/everything-about-down-sleeping-bags-jan-harac"
last_updated: "2022-11-18"
---

# #10 All about down sleeping bags – myths, choosing one, specs, care, and innovation – Jan Haráč

Authors: David Czempka

Date: 2022-11-18

We took a thorough look at all the parameters of down and fabrics, and at choosing a sleeping bag. We mentioned the most common myths and touched on questions like hydrophobic down and testing.

For the tenth episode, we were joined by Jan Haráč – co-founder of the **Patizon** brand. Funny stories, even though Honza really does have plenty of them, took a back seat this time. That's because we went really in-depth on one of the most important pieces of gear – **sleeping bags**.

We thoroughly went through all the **parameters of down and fabrics, and how to choose a sleeping bag**. We mentioned the most common myths and touched on questions without a clear answer, like **hydrophobic down** and **standardized testing**.

There was a lot of information and advice you won't find just anywhere. We focused part of the conversation on how they do things at Patizon. How they think about **production and innovation**, how **manufacturing in Czechia** works, and where their product portfolio is headed next.

If sleeping bags are all Greek to you, this episode will be a lifesaver! Let us know how you enjoyed this special and whether you learned something new or useful – thanks!

## Chapters

- 0:00 Intro
- 1:25 When and where was Patizon founded?
- 9:00 First ascents in the mountains and sleeping bag development
- 13:33 More high-altitude ambitions
- 15:40 Gathering inspiration for innovation
- 18:27 Manufacturing in Czechia
- 24:14 Down vs. synthetic insulation
- 28:20 Down and moisture
- 31:45 What I need to know to choose a sleeping bag
- 33:45 Standard temperature ratings vs. reality
- 40:40 Down specs – fill power, down/feather ratio
- 45:50 Duck vs. goose down
- 49:30 Hydrophobic down
- 52:32 Down certifications, sustainability, and minimizing environmental impact
- 1:01:00 How to choose sleeping bag size / length
- 1:06:24 Key properties of sleeping bag fabric
- 1:10:26 Baffle construction
- 1:16:53 Caring for and maintaining a down sleeping bag
- 1:23:38 Room for further innovation in sleeping bags
- 1:27:03 What's new from Patizon in the near and distant future
- 1:35:11 Wrap-up

Listen on: [Spotify](https://open.spotify.com/episode/6vQe6xeTDcIwmjJNkEy0yF) · [Apple Podcasts](https://podcasts.apple.com/cz/podcast/10-v%C5%A1e-o-p%C3%A9%C5%99ov%C3%BDch-spac%C3%A1c%C3%ADch-m%C3%BDty-v%C3%BDb%C4%9Br-parametry-%C3%BAdr%C5%BEba/id1612950422?i=1000586788555) · [YouTube](https://www.youtube.com/watch?v=G62Y7Xcx75Y)

## Down gear from Patizon

Sleeping bags, quilts, and other down gear from **Patizon** are made in Czechia, and you'll find most of what Honza talks about in the episode right in their products. If the conversation got you curious, check out [**the full Patizon lineup**](/b/patizon) on our website.

## You might like this

- [Patizon Down Booties](/p/patizon-down-booties.md)
- [Patizon Merino Beanie](/p/patizon-merino-beanie.md)
- [Gramino Ultralight Waterproof Backpack Liner](/p/gramino-ultralight-waterproof-backpack-liner.md)
- [DexShell Ultra Thin Crew](/p/dexshell-ultra-thin-crew.md)
- [Liteway Pokkie Pack](/p/liteway-pokkie-pack.md)
- [Gramino SagiFlow](/p/gramino-sagiflow-ultralight-bidet.md)
- [Gramino AURA Pouch](/p/gramino-aura-pouch.md)
- [Patizon G 400](/p/patizon-g400.md)
- [Patizon Merino T-shirt Lady](/p/patizon-merino-t-shirt-lady.md)

This post is also available as [HTML](/blog/everything-about-down-sleeping-bags-jan-harac).

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