Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
Weight8 lbs
FitsFinnmark FD-5 Trinity XL
Dimensions68 in L x 17 in D x 2.5 in thick
MaterialMarine-grade vinyl cover, non-toxic foam insert
ColorBlack
ModelFD-5 Sauna Cushion
Part NumberFM-REC-SEAT-COMBO-5
UPC810214828518
CollectionFinnmark Trinity Series
CareKeep a towel between you and the cushion. Remove damp towels after each session. Unplug the sauna, then wipe with a damp cloth. No liquid cleaners or aerosol sprays.
Warranty5-year limited, residential use, original buyer, from delivery
Included ComponentsSauna cushion
BrandFinnmark Designs
Contains woodNo
Attachments
Gallery

Finnmark FD-5 Sauna Cushion | Marine-Grade Vinyl Bench Cushion for the FD-5 Trinity XL

The FD-5 Trinity XL runs full-spectrum infrared and a Finnish heater in one room, and this is the cushion Finnmark makes for it: 68 in long, 17 in deep and 2.5 in thick, black marine-grade vinyl over a non-toxic foam insert. Finnmark rates the vinyl fade- and tear-resistant and adds a full zipper for easier cleaning. It is not interchangeable with the FD-3 cushion, which is shorter and 3 in deeper. Towel on top, damp cloth after, no sprays. The full steps from Finnmark’s manual are below.

Build Your Quote:

$298.00

US shipping: $37.95. This item ships free when you add it to a sauna or heater order, or when your order is $300 or more. Sauna and heater customers get free shipping on accessories for life; we’ll recognize your email at checkout.

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Built for the FD-5 Trinity XL

Finnmark Designs Fd5 Trinity Xl Infrared + Traditional Finnish Sauna Hybrid

At 68 in long, this is the longest of the five Finnmark cushions we carry. It is 17 in deep like the FD-4 Trinity cushion, where the cushions for the FD-1 to FD-3 infrared rooms are 20 in deep. The room it fits is the Finnmark FD-5 Trinity XL, Finnmark’s infrared and traditional hybrid sauna.

What’s included

  • One Finnmark FD-5 sauna cushion, 68 in L x 17 in D x 2.5 in thick
  • Finnmark’s 5-year limited warranty (in the Attachments tab)

What it’s made of

A black marine-grade vinyl cover over a 2.5 in foam insert, both of which Finnmark describes as non-toxic. Finnmark rates the vinyl fade- and tear-resistant and closes the cover with a full zipper “for easy cleaning.”

How to keep it clean

These steps come from Finnmark’s FD and Trinity owner’s manuals and Finnmark’s accessory warranty.

  1. Sit on a towel, not straight on the vinyl. Finnmark’s manual calls for one towel on the bench, one on the floor for sweat and a third to wipe off with. On the cushion, the bench towel catches the sweat.
  2. Take damp towels out after every session. Finnmark’s manual says not to leave damp towels on the bench.
  3. Unplug the sauna, then wipe the cushion with a damp cloth. A damp cloth is the cleaning method Finnmark’s manual gives for the inside of the sauna.
  4. Skip the sprays. Finnmark’s manual says not to use liquid cleaners or aerosol cleansers inside the sauna, and the accessory warranty does not cover damage from improper care or from non-recommended cleaning agents.

Warranty

Finnmark’s accessory warranty covers defects in material and workmanship for five years from the date of delivery, for the original buyer, in a home sauna. It does not cover commercial or institutional use, normal wear and tear, or damage from improper care. The full warranty is in the Attachments tab.

Pick the right size

Finnmark cuts each cushion to one room:

For your back, add the Finnmark Curve, a cedar backrest Finnmark calls suitable for any sauna.

Questions we get

Is a cushion better than a towel?

A cushion adds 2.5 in of foam and wipes clean. A towel or seat cover goes in the washing machine. Either way, Finnmark’s manual calls for a towel on the bench, and with a cushion it goes on top.

What’s it made of, and is it safe in the heat?

Marine-grade vinyl over a 2.5 in foam insert, both of which Finnmark describes as non-toxic. Finnmark doesn’t publish emissions test results, and we don’t have a test report to show you.

Can I use it in a clinic, gym or rental?

You can, but Finnmark’s accessory warranty covers residential use only, so it won’t cover a commercial sauna. For a room that many people use, washable seat covers or towels, one per person, are the easier routine.

Specifications

Fits Finnmark FD-5 Trinity XL
Model FD-5 Sauna Cushion (part FM-REC-SEAT-COMBO-5)
Size 68 in L x 17 in D x 2.5 in thick
Cover Marine-grade vinyl, fade- and tear-resistant
Insert 2.5 in non-toxic foam
Closure Full zipper
Color Black
Collection Finnmark Trinity Series
UPC 810214828518
Warranty 5-year limited, residential use, original buyer, from delivery

Why we carry accessories

Accessories Are Great. A Sauna You Actually Use Is Better.

We stock accessories like this one so our sauna and heater customers can get everything for the room in one place. If you already have a sauna you love, welcome. If you are still planning one, or the one you have never quite gets hot enough, take a look at what we really do.

Free shipping for life on accessories

On its own, this ships for $37.95. Put it on the same order as a sauna or heater and it ships free. After that, accessories and materials like this ship free on every order you place with us, for life. Use the same email and we’ll recognize you at checkout.

The Rabbit Hole Ends Here

Did you always have opinions about cedar? No. No you did not. Most people shopping for a sauna end up with a dozen tabs open, three brands that all say they are the best, and a forum thread that argues both ways. We have built, installed and fixed saunas like the ones we sell, and we use our own at home. Tell us about your space and we will tell you which sauna and heater fit it, and which ones don’t.

  • A heater sized to your roomWe match the heater to the room’s volume, walls and glass, so it heats the way it should.
  • The whole project, thought throughSpace, electrical, freight and install get talked through before you order, not discovered after.
  • Still here afterThe same people answer when a question comes up mid-build, and long after delivery.

The best sauna deal is the one you don’t have to buy twice.

Questions about your space? Call or text (844) 565-1113. Want to see it first? Explore in 3D and draw your room with the sauna and heater before you buy.

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Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Ask a product question.

Specs
Weight8 lbs
FitsFinnmark FD-5 Trinity XL
Dimensions68 in L x 17 in D x 2.5 in thick
MaterialMarine-grade vinyl cover, non-toxic foam insert
ColorBlack
ModelFD-5 Sauna Cushion
Part NumberFM-REC-SEAT-COMBO-5
UPC810214828518
CollectionFinnmark Trinity Series
CareKeep a towel between you and the cushion. Remove damp towels after each session. Unplug the sauna, then wipe with a damp cloth. No liquid cleaners or aerosol sprays.
Warranty5-year limited, residential use, original buyer, from delivery
Included ComponentsSauna cushion
BrandFinnmark Designs
Contains woodNo
Attachments
Gallery