Sauna Accessories That Elevate Your Relaxation Experience (Must-Have Items for Any Sauna Lover!)

The sauna accessory market is 20% genuinely useful kit and 80% tat with a pine motif. After the sauna itself, the difference between a good session and a great one comes down to about five items — and the entire useful list, bought well, costs less than a single spa day. This guide names specific picks with current UK prices rather than waving you at a search box, flags the honest comfort upgrades, and lists the gadgets to skip.

Prices below are from Finnish-specialist UK retailer Finnmark Sauna, checked July 2026 — brands like Rento, 4Living, KOLO and Emendo are the ones you’ll find in actual Finnish saunas. Where we link to Amazon it’s so you can compare prices and delivery on the same or equivalent items; as ever, links may earn us a commission and never decide a recommendation. New to sauna kit entirely? The sauna essentials guide is the broader starting point.

The picks at a glance

The five that earn their place

1. Proper sauna towels — one to sit on, one to dry off

The workhorse accessory. You want one towel as a barrier between you and the bench (etiquette and hygiene — benches outlive us all because people sit on towels) and one for afterwards. What to look for: linen or waffle-weave cotton rather than heavy terry — they dry fast between sessions and survive endless hot washes without going stiff. The Finnish standard is the pellava (linen) bench towel, and Finnmark stocks ranges from Rento and Luhta; our sauna towel guide covers the materials in depth, and you can compare linen sauna towel prices on Amazon against the specialist options.

2. Thermometer/hygrometer — because “hot” isn’t a number

A combined thermometer and hygrometer tells you whether you’re sitting in 70°C or 90°C and how humid the room is — the difference between a session you control and one that controls you. Traditional saunas run 65–90°C at under 20% humidity (the ranges from our sauna vs steam room comparison); the gauge is how you find your number, and how you know the löyly actually changed something.

Our pick: the Rento bamboo thermometer & hygrometer combo at £22.99 (Finnmark, July 2026) — wood-cased and analogue, which is exactly what survives years at ceiling height. Rento’s plain thermometers run £21.99 and KOLO’s £28.99, so the combo is the obvious buy: the hygrometer half is what tells you why 80°C felt gentle yesterday and brutal today. Check prices for a Rento thermometer hygrometer on Amazon. Skip anything digital that doesn’t publish a heat rating — ordinary electronics die fast above their spec.

3. Bucket and ladle — the löyly kit (traditional stoves only)

Ladling water over hot stones is the heart of the traditional sauna: the steam burst (löyly) is what turns dry heat into the full experience. Wood stays cool to the touch and is the tradition; anodised aluminium is the buy-it-once modern option.

Our picks (Finnmark’s bucket collection, July 2026): the 4Living alder bucket with rope handle, 4 litres, £28.99 (spruce version £26.99) paired with the Rento heat-treated bamboo ladle at £14.99 — about £44 for the classic wooden set. If you’d rather never oil wood, Rento’s anodised aluminium bucket is £50.99 with matching ladles at £22.99. This is also the safe route to aromatherapy: a few drops of essential oil into the bucket water, never neat onto the stones, where undiluted oil can flash and smoke — dilution details in the essential oils guide. Compare wooden bucket and ladle sets on Amazon.

Infrared cabin owners: skip this entirely — no stones, no steam, nothing to ladle.

4. A timer that isn’t your phone

Phones and hot rooms don’t mix — heat cooks batteries, and the point of the session is to be somewhere your inbox isn’t. The traditional answer is a wall-mounted sauna sand timer, usually a 15-minute glass — conveniently the session length the health evidence points at. Analogue, nothing to fail, flip it on the way in. Our sand timer guide covers the formats; compare wall-mounted sauna sand timers on Amazon.

5. Backrest or headrest — the long-session enabler

Bare bench slats are fine for ten minutes and a plank for twenty. A contoured wooden backrest or headrest is the accessory regulars most often call the best money they’ve spent — the difference between perching in the heat and settling into it. Look for the same timber as your benches (aspen and alder stay coolest), slat-spanning width, and no metal fixings anywhere you’ll touch. The backrest guide and pillow guide go deep; compare wooden sauna backrests on Amazon.

Worth-it comfort upgrades

• A sauna hat — the £13 upgrade that outperforms £100 gadgets. Thick wool or felt insulates your head, the highest and hottest part of you, so the rest of you gets a longer, more comfortable session. Our pick: Finnmark’s traditional 100% wool hats at £12.99 (July 2026); Emendo’s thicker felt version is £21.99 if you run very hot sessions. The full case — including why every Finnish grandparent owns one — is in our sauna hats guide.
• A proper robe. For the walk between sauna, shower and sofa — especially outdoor-cabin owners in a British winter. Cotton towelling does the job; the sauna robe guide covers weights and materials.
• A seat cushion. Halfway between towel and backrest: a heat-rated cushion takes the edge off hard benches, particularly for hips and backs that complain. Make sure it’s actually rated for sauna temperatures, not a repurposed garden cushion.

Atmosphere — where the tat creeps in

This is the category to treat sceptically:

• Essential oils: yes, carefully. Genuinely transformative for the atmosphere — eucalyptus and pine are the classics — but always diluted in the ladle water (traditional) or diffused outside the hot room (infrared). Never neat on stones. Details in the essential oils guide.
• Lighting: mostly built-in or not at all. Soft light beats a bright bulb, but battery LED gadgets marketed for saunas rarely state a heat rating, and ceiling-height air in a traditional hot room will cook cheap electronics. If your cabin has built-in lighting, use it; if not, a candle-style light outside a glass door achieves the mood without the risk.
• Speakers: outside the room. Same heat problem, plus the phone-free argument. A speaker outside the door at low volume wins.
• Stones: replacement, not upgrade. Sauna stones are consumables for traditional stoves — they crack and crumble over a few years and get re-stacked or replaced per your stove manual, with proper igneous sauna stones rather than garden pebbles (which can shatter when doused). Maintenance, not a “must-have accessory”, whatever the listings say.

What you need, by sauna type

The skip list

Money saved here funds the good towels. Popular listings we’d leave on the shelf:

• Phone pouches and holders “for saunas”. The problem isn’t waterproofing, it’s 80°C+ air cooking the battery — and the entire point of the session. No pouch fixes either.
• Bluetooth “sauna speakers” for inside the hot room. Most don’t publish a sustained-heat rating; consumer electronics specs typically stop around 40–45°C ambient. Speaker outside the door, problem solved for free.
• “Detox” add-ons. Ionic foot pads, detox salts for the ladle bucket, infrared “detox boosters” — the detox claim is marketing before you add accessories to it.
• Digital thermometer combos not rated for saunas. Ordinary room units die fast above their spec. The £22.99 analogue Rento will outlive several of them.
• Garden pebbles as stone replacements. Non-igneous stones can trap moisture and shatter when doused. Proper sauna stones are cheap; eye protection is expensive.

Looking after the kit (so you buy it once)

Five minutes of care doubles the life of everything above:

• Towels and linens: hot wash without fabric softener — softener coats fibres and kills absorbency, which is the towel’s one job. Line-dry when you can.
• Wooden kit (bucket, ladle, backrest): rinse with clean water after sessions — never detergent inside the bucket (it ends up aerosolised in your next löyly). Let wood dry in the ventilated sauna, not a sealed cupboard. A light wipe of paraffin oil once or twice a year keeps buckets from drying and cracking.
• Felt hats: air-dry after every session, hand-wash occasionally, never radiator-dry — felt shrinks with enthusiasm.
• Stones: re-stack loosely once a year so air moves between them; replace crumbling ones. Cracked stones throw weaker löyly long before they fail visibly.
• The cabin itself: benches outlive everything if people sit on towels and the room airs out after each session — door open, vents open, heat off.

Buy once, buy boring

The kit that survives years of sauna use is wood, felt, linen and glass — the same materials Finnish saunas ran on a century ago. The purchases that end up in a drawer light up, connect to Bluetooth, or promise to track something. Kitting out a traditional sauna from scratch — alder bucket (£28.99), bamboo ladle (£14.99), Rento combo gauge (£22.99), wool hat (£12.99), sand timer and two decent towels — comes in around £100, once, and you’re done. Everything after that is making the ritual yours, which is exactly what the comfort tier is for.