Towel Size and Fabric: What Works on Hot Benches

Why Your Towel Matters on a Hot Bench

A sauna session is a sweaty one. According to the Cleveland Clinic, the heat from a sauna causes an increase in heart rate and sweating, which is part of the body's response to the heat. On a hot wooden bench, that sweat needs to go somewhere, and a towel is the best barrier.

A towel does two things: it protects your skin from the hot wood, and it absorbs the moisture your body releases. Without a towel, sweat pools on the bench, making the surface slippery and less hygienic for the next bather. For those who value cleanliness, a towel is the standard way to sit in a sauna. You can also use a towel to wipe your face and neck during the session. For more on hygiene, see our Why Sitting on a Towel Is Standard Sauna Etiquette article.

Cotton Towels: The Reliable All-Rounder

Cotton is the most common towel fabric, and for good reason. It absorbs water well, feels soft against the skin, and washes easily. In a sauna, a cotton towel holds moisture and can feel heavy when saturated, but it remains comfortable for most bathers. A thicker cotton towel, such as a premium bath sheet, gives you more absorbency and a plusher feel.

Cotton is a safe choice for both sitting and drying. It launders well and holds up to repeated use. If you only want one towel for your sauna routine, cotton is a reliable option. You can read more about the differences between cotton and linen in our Linen vs Cotton Towels article.

For a traditional sauna, which Finnleo says many enjoy at temperatures between 150 and 175 degrees Fahrenheit, a cotton towel is effective for absorbing sweat and protecting the bench. The typical session length, also noted by Finnleo, is 10 to 20 minutes, so a single cotton towel can handle the job.

Linen Towels: Light and Fast-Drying

Linen is made from flax fibers and is known for being lightweight and breathable. It dries much faster than cotton, which is a benefit if you plan to use the same towel across multiple sauna sessions or if you want something that does not stay damp. Linen has a slightly rougher texture than cotton, but many bathers like its crisp feel and the way it breathes in high heat.

Because linen is not as absorbent as cotton or terry, you may need to blot sweat rather than rub. That is fine for a sauna, where you are not toweling off after a shower. A linen towel can be a great choice for those who run hot and want a lighter layer on the bench. If you are curious about how linen compares to cotton, see our Linen vs Cotton Towels piece.

Terry Towels: Maximum Absorption

Terry is the plush, looped fabric used for most bath towels. It is designed for maximum absorbency, so it excels at soaking up sweat in a sauna. The loops create a soft cushion under you, which can make a hard bench more comfortable. The trade-off is that terry is heavier and holds moisture, so it takes longer to air out between uses.

If you sweat heavily, a terry towel is your best bet for staying dry. For sitting, a terry towel can be more comfortable, but it also holds heat against your skin. Some people prefer to use a terry towel for drying after a rinse and a lighter cotton or linen towel for sitting. You can pair them as you like.

Fabric Comparison at a Glance

Here is a quick comparison of the three fabrics you will most often see in sauna towels. Use it as a starting point for your choice.

Caring for Your Sauna Towel

To keep your towel absorbent and comfortable, wash it after each use. Use warm water and a mild detergent, and avoid fabric softeners, which can coat the fibers and reduce absorbency. Tumble dry on low or hang to dry. Proper care also helps the towel last longer, so you get more sessions out of it.

When you buy a towel, consider whether it has been tested for safety and quality. Look for a certification mark such as the ETL Listed Mark from Intertek, which indicates that the product has been independently tested to recognized safety standards. While this is not a substitute for correct usage, it gives you confidence in the product's construction.

Sizing and Placement: Getting Coverage Right

The right size towel depends on how you use it. A standard bath towel (around 27 by 50 inches) is enough to cover the bench surface for most people. If you prefer a larger layer, a bath sheet adds extra width. For a two-person bench, a long towel can cover more area, but you can also bring two towels to share.

When you sit, place the towel so it covers the wood you touch from the back of your thighs to your lower back. You can fold it to double the layer if the bench is very hot. Some bathers bring a small towel to use as a face cloth. The key is to have enough fabric to absorb sweat and keep your skin off the wood.

Think about how many towels you need. If you plan to rinse off after the sauna, a second towel is useful for drying. You can also use one towel for sitting and another for drying. See our How Many Towels to Bring for a Sauna Session guide for more advice.

What to pick for your use

Questions

What size towel should I use in a sauna?

A standard bath towel, about 27 by 50 inches, is usually enough to cover the bench area you sit on. If you want more coverage, choose a bath sheet or bring two towels.

Is linen or cotton better for a sauna?

Both work well. Cotton is softer and more absorbent, while linen dries faster and feels lighter. Your choice depends on whether you value plushness or quick drying.

Can I use a terry towel in a sauna?

Yes, terry is highly absorbent and provides a soft cushion. It can feel heavy and hold heat, so some bathers prefer using it only for drying after the session.

How many towels should I bring to a sauna?

Bring at least one for sitting. If you plan to rinse and dry off afterward, bring a second towel. Many bathers bring a small towel for their face as well.

Why do I need a towel on the bench?

A towel protects your skin from the hot wood, absorbs sweat, and keeps the bench hygienic for others. It also gives you something to wipe your face and hands with during the session.