Choose a sauna hat shape by the fit and look you prefer. A bell shape, like The Classic, has a tall rounded crown and comes down lower at the sides. A bucket shape, like The Modern, has a flatter crown and a brim that angles down around the head. Both FELT. hats use the same 4mm Australian merino wool felt.
Shape is mostly personal preference. The density and thickness of the felt matter more for how a hat performs in the heat. This guide compares the two shapes on fit and hair, and covers how to keep either shape in good condition.
Key Takeaways
- The Classic is a bell shape with a tall, rounded crown. It sits lower at the sides and fits over hair tied up in a bun.
- The Modern is a bucket shape with a flatter crown and a brim that angles down around the head.
- Both hats are pressed from a single piece of 4mm Australian merino wool felt, so the material is the same in each.
- Care is the same for both shapes. Hang the hat by its loop or stand it upright to dry after each session.
what is the difference between a bell and a bucket sauna hat?
The difference is in the crown and the edge. A bell sauna hat has a tall, rounded crown that flares out towards the edge, so it sits deeper on the head. A bucket sauna hat has a flatter crown and a brim that angles down around the head. The bell is the traditional felt sauna hat shape.
FELT. makes a hat in each shape, The Classic and The Modern. Both are Australian merino wool, designed in Sydney. Each hat is pressed from a single piece of 4mm felt with no seams, and our guide to how a merino wool sauna hat is made explains that process.
| The Classic | The Modern | |
|---|---|---|
| Shape | Bell | Bucket |
| Crown | Tall and rounded | Flatter, with a brim that angles down around the head |
| At the sides | Comes down lower | Sits higher and closer |
| Hair | Fits over a bun | Suits shorter hair or hair worn down |
| Felt | 4mm Australian merino wool | 4mm Australian merino wool |
| Care | Hang by its loop or stand upright to dry | Hang by its loop or stand upright to dry |
which sauna hat shape suits longer hair?
The Classic suits longer hair. Its taller crown leaves room for hair tied up in a bun, and the sides come down lower around the head. The Modern sits closer to the head, so it suits shorter hair or hair worn down.
does the shape change how a sauna hat works in the heat?
Shape mostly changes how the hat sits and how much of the head it covers. The air near the ceiling is the hottest in the room, and a seated bather's head sits in it. VTT Technical Research Centre of Finland measured air at head height at typically 90°C, against 80–85°C at bench level (Äikäs & Holmberg, VTT, retrieved October 2026). A wool felt hat insulates your head from that air.
Both FELT. hats use the same 4mm felt, so the layer of wool is the same thickness in each. Merino wool can absorb up to 35% of its own weight in moisture before it feels wet (The Woolmark Company, retrieved October 2026). Our guide to why merino wool is the gold standard for sauna hats covers the fibre. Our guide to how to choose a high-quality sauna hat covers density and thickness.
how do you choose between the modern and the classic?
Start with how you wear your hair in the sauna, then choose the look you prefer. The Classic is the traditional bell, with a soft, rounded outline. The Modern has a cleaner, structured outline that reads like an everyday bucket hat.
If you share a home sauna, a hat in each shape makes it easy to tell them apart.
how do you keep either shape in good condition?
Care is the same for both shapes. After each session, hang the hat by its loop or stand it upright somewhere airy so it dries in shape. Spot clean marks with cool water and a wool-safe detergent, and don't wash the hat by hand or in a machine.
If a brim or crown gets crushed, steam softens the felt so you can reshape it by hand. Each hat comes with a drawstring bag for carrying it to a bathhouse, but store it hung by its loop. Our merino wool sauna hat care guide covers the steam method in full.
frequently asked questions
what is the difference between the modern and the classic?
The Classic is a bell shape with a tall, rounded crown that comes down lower at the sides. The Modern is a bucket shape with a flatter crown and a brim that angles down around the head. Both are pressed from 4mm Australian merino wool felt.
which sauna hat shape suits longer hair?
The Classic. Its taller crown leaves room for hair tied up in a bun. The Modern sits closer to the head, so it suits shorter hair or hair worn down.
do the modern and the classic use the same felt?
Yes. Both are pressed from a single piece of 4mm Australian merino wool felt with no seams. The shape changes how the hat sits and how much of the head it covers.
can you reshape a felt sauna hat?
Yes. Hold a clothes steamer or a boiling kettle near the felt until it softens, then shape the crown or brim by hand. Let the hat cool and dry before you wear it again.
how do you dry a sauna hat after a session?
Hang it by its loop or stand it upright somewhere airy, away from direct heat and sunlight. A merino wool sauna hat can take 24 to 48 hours to dry completely.
references
- Äikäs, M. and Holmberg, M. Sauna ventilation. VTT Technical Research Centre of Finland, Research Notes 1431, 1992. Retrieved October 2026. saunatimes.com
- The Woolmark Company. Wool is naturally breathable. Retrieved October 2026. woolmark.com
