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TERWA – Phone case made from tarred birch
Sale price19,90 €Regular price
23,90 €
+ Add MagSafe and personalization
TERWA phone cases are made from Nordic birch, treated with traditional tar – the surface darkens and seals up, making it naturally resistant to water and dirt. The finish isn’t sticky or staining; it just feels like real wood. Because it is. Engrave your own text, logo, dog.. anything, and admire the live preview. Carry something with roots.
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Nordic craftsmanship since 2011
Free shipping available
180-day warranty
Made to order in 2–10 days and delivered using your chosen shipping method in 2–5 business days.
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TERWA – wooden tar birch phone cases & covers
iPhone, Samsung, OnePlus, Pixel, Nothing – dark brown, engravable
The campfire has smoldered through the night. Mist rises from the lake, the coffee pot starts to hiss, and the air carries that smoky, resinous scent you won’t find in the fragrance aisle. TERWA is a handcrafted wooden phone case made from tar birch – dark brown and genuine, and it smells exactly like that morning. You pick up your phone about 56 times a day; here’s a case that gives those moments something extra. The wood grain lives on the surface like growth rings on a stump, and no two are alike. Fits iPhone 17, 16, 15, 14, 13, Samsung Galaxy, OnePlus, Google Pixel, and Nothing models. Add MagSafe or engrave a name and create your own TERWA case.
In the backwoods of Kainuu, tar pits smoked for weeks, tar boats came down the river to Oulu, and the whole city smelled of it. The same stuff held sailing ship ropes together across the Atlantic. Lastu was born in that city. TERWA is that tradition in modern form: a phone case treated with the same material – just on a slightly smaller scale.
Material: tar birch – smoke and wood grain
Shade & finish
Tar birch
- Tar birch – dark brown like a coffee pot left by the campfire, with the grain showing through. Every wooden phone case is one of a kind.
- The tar treatment repels splashes – it’s not sticky and won’t stain your hands. Morning dew, a rain shower, and fishy hands are no problem. Swimming is.
- A subtle scent of real tar, not perfume. Strongest during the first weeks – when it takes you to smoky sauna benches and a September shoreline rock – then it becomes your little secret.
If you’re looking for brown phone cases but don’t want faux leather, here’s the real thing. Want to compare? See all wooden phone cases →
Structure and protection
+ Textured edge profile – the tar finish adds natural grip. The wooden phone case stays firmly in your hand and won’t slip.
+ Raised edge protects the screen – you can place your phone on the table without the screen making contact. Drop protection test →
+ Raised camera frame – the lens stays off the surface, away from desk dust. The camera stays clear.
+ Thin and light. Birch is naturally lighter than most plastic phone cases – no unnecessary bulk.
+ MagSafe compatibility available – wireless charging and magnetic accessories work at full power. MagSafe vs regular Case →
+ Engraving – a moose, coordinates, a symbol, the Lion of Finland, or a name. The live preview shows the result before you order. See the design guide →
Not from stock. Nordic-made, made to order.
The tar pits smoked. The scent stayed.
Every TERWA phone case is made to order from Nordic birch in Oulu. Tar repels splashes, doesn’t feel sticky, and won’t stain your hands. No stock cases, no mass production – and no, we didn’t invent tar ourselves: it’s been boiled around here for hundreds of years, we’re just carrying it on. See how the cases are made in Oulu →
Tar A subtle natural scent – smoke, pine, and the morning after a campfire. No stickiness, no staining your hands. Naturally repels splashes.
MagSafe Selectable for all phone models on the product page. Do you need a MagSafe case?
Engraving Moose, fell landscape, fishing spot coordinates, logo, or name. Shown in black in the preview – on the finished wooden phone case, it appears in birch’s own light tone against the dark tar finish.
Durability What do wooden phone cases go through? Read the tests and everyday experiences.
Live preview Phone model, material, MagSafe, and personalization – everything updates in real time before you order. No surprises.
MagSafe – snap and go
MagSafe compatibility selectable directly on the product page. The magnetic ring aligns the charger and accessories securely – snap and go. Works at full power.
MagSafe accessories that fit perfectly
- KRIP 2.0 MagSafe finger grip – slim, metal, adds grip. Also works as a desk stand.
- KARB MagSafe wallet – space for up to 4 cards.
What is MagSafe?
Video What is MagSafe? – Here’s how it works
Materials & certifications
Wood
Genuine Nordic birch. Tar deepens the tone to dark brown – the wood grain stays visible. Every wooden phone case is unique.
Tar treatment
Water-resistant natural product. Not sticky, won’t stain your hands. Subtle natural scent.
Certifications
Design From Finland · FSC · PlasticBank
Why choose TERWA?
- ✓Wooden phone case – genuine tar birch, not plastic
- ✓Nordic tar tradition in a modern form
- ✓Raised edge and camera frame – screen and lens protected
- ✓Laser engraving – moose, coordinates, name or logo
- ✓MagSafe compatibility available
- ✓Nordic manufacturing – made to order in Oulu
- ✓Fits: iPhone, Samsung, OnePlus, Google Pixel, Nothing
No compromises. No stock cases.
Complete the set with MagSafe accessories:
KRIP 2.0 MagSafe finger grip Slim. Metal. Holds.
KARB MagSafe wallet Space for up to 4 cards.
Shipping
The product is made to order in 2–10 days and delivered with your chosen shipping method in 2–5 business days. Free shipping available. You’ll see delivery times at checkout.
Read more: blogs and guides
Durability
What do wooden phone cases go through?
ProtectionDrop protection and thickness – Lastu Case put to the test
MagSafeWhat is MagSafe?
MagSafeDo you need a MagSafe case?
GuideHow to design your own phone case?
ManufacturingLastu Case are made in Oulu – here’s how it happens
Compatible phone models
iPhone
iPhone 18 Pro MaxMagSafe iPhone 18 ProMagSafe iPhone 17 Pro MaxMagSafe iPhone 17 ProMagSafe iPhone 17 AirCase iPhone 17Case iPhone 16 Pro MaxMagSafe iPhone 16 ProMagSafe iPhone 16 PlusCase iPhone 16Case iPhone 15 Pro MaxMagSafe iPhone 15 ProMagSafe iPhone 15Case iPhone 14 Pro MaxMagSafe iPhone 14 ProMagSafe iPhone 14Case iPhone 13 Pro MaxMagSafe iPhone 13 ProMagSafe iPhone 13 miniCase iPhone 13Case
Samsung Galaxy
Galaxy S25 UltraMagSafe Galaxy S25 EdgeCase Galaxy S25+MagSafe Galaxy S25Case Galaxy S24 UltraMagSafe Galaxy S24 FECase Galaxy S24+MagSafe Galaxy S24Case Galaxy S23 UltraMagSafe Galaxy S23 FECase Galaxy S23+Case Galaxy S23Case Galaxy A57Case Galaxy A56Case Galaxy A55Case Galaxy A54Case Galaxy A37Case
OnePlus
OnePlus 15RCase OnePlus 15MagSafe OnePlus 13RCase OnePlus 13MagSafe OnePlus 12RCase OnePlus 12MagSafe Nord 5MagSafe Nord 4MagSafe Nord 3Case
Google Pixel
Pixel 11 Pro XLCasePixel 11 ProCasePixel 11Case
Pixel 10 Pro XLCase Pixel 10 ProCase Pixel 10Case Pixel 10aCase Pixel 9 Pro XLMagSafe Pixel 9 Pro FoldCase Pixel 9 ProMagSafe Pixel 9aCase Pixel 9Case
Nothing Phone
Nothing (3)MagSafe Nothing (3a) ProMagSafe Nothing (3a)MagSafe Nothing (4a) ProCase Nothing (2a)Case Nothing (2)MagSafe Nothing (1)Case
Realme
Choose your own model from the product page menu – the live preview updates in real time.
Find more Lastus:
Screen protector · LEKA
Screen protected – LEKA screen protector
TERWA carries the forest and smoky sauna on its back – but the screen is the surface you stare at all those times a day. Complete the set with a LEKA screen protector: a cut-to-fit protective film that handles everyday life better than traditional tempered glass.
- +Precision-fit screen protector – a protective film laser-cut exactly for your phone model (iPhone, Samsung, OnePlus, Pixel). Not an off-the-shelf item, but made to order for you.
- +Nano PET, not tempered glass – flexes and won’t crack during installation like tempered glass. No scratches, no yellowing, full touch accuracy.
- +2 pcs / €14.90 – two screen protector films for the price of one tempered glass protector. Keep the second as a spare.
Frequently asked questions
What is a dark wooden phone case – recommendation?
TERWA is made from Nordic tar-treated birch, giving the wood a unique dark blue-brown tone and a subtle natural scent. No paint, no print. Every phone case is different thanks to the material. MagSafe-compatible available.
What does tarred birch mean — isn’t it sticky?
Silver birch is a Nordic wood whose surface has absorbed tar during treatment. It gives the wood a deep brownish-blue tone and a subtle pine scent. The finish is not sticky – the TERWA phone case is smooth and pleasant to hold.
Would TERWA make a good gift for a nature lover or cabin person?
Absolutely. Tar is part of Finland’s cultural heritage — a familiar scent, a natural material. TERWA is a meaningful gift for anyone who loves the outdoors, the cabin life, or simply appreciates authentic Nordic character.
Can the TERWA phone case handle everyday use?
Yes. The surface is finished to stand up to everyday use — it repels moisture and splashes. Engraving or your own image can be added. MagSafe-compatible available. Made to order in Oulu.
Feel free to ask us anything — we usually reply on weekdays within 24 hours. Every Lastu phone case is handcrafted to order in Oulu.
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Delivery and production time
Your phone case is made only after you place your order. Production time is 2–10 days, with delivery after that taking 2–5 business days.
Within the Nordic region: letter delivery to your mailbox without tracking €2.00 — free on orders over €19. Small parcel to your door via Posti €4.90, or pickup from a Posti pickup point; these delivery options include tracking.
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Customer service
The fastest way to reach us is via Facebook Messenger or Instagram direct message. For orders, claims, and other official matters, email at info@lastu.co is the best channel.
We usually reply within 24 hours on weekdays. During busy production periods, our response may take a little longer, as the whole team is hands-on with making your cases. View all contact details
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Frequently Asked Questions
We’ve gathered answers to the most common questions: choosing your phone model, materials, engraving, MagSafe, and caring for your phone case.
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Returns and Right of Return
Our products have a 14-day return policy. Please contact customer service before sending a return.
Personalized products — such as Case ordered with your own image, logo, or engraving — are not eligible for return or exchange under the Consumer Protection Act.
Return address: Droplet Hitech Design Oy, Nahkatehtaankatu 2, 90130 Oulu.
Us vs. the rest
Lastu
Bulk phone cases
Non-toxic production and materials
Yes
No
Personalize with an image or logo
Yes
No
Always unique
Yes
No
Excellent grip and protection
Yes
Rarely
Why Lastu?
The world is full of plastic phone cases. We do things differently: genuine Nordic birch, camouflage fabric, and other fascinating handcrafted materials, made to your choices. Preview the final result before you order.
Nature and technology meet
What our customers say
Customer Reviews
Overall rating: 4.8 / 5 from 795 reviews.
Hienoa saada oman koiran kuva Suomessa tehtyyn puukuoreen. Aivan täydellistä🤩
👍
Top quality once delivered 👍
Laadukkaan oloiset ja kivan näköiset kuoret.
Laatua ja kauneutta koko kämmenellä🥰
Pitkä odotus palkittiin eilen, kun postilaatikosta löytyi vihdoin odotettu kuori. Puhelin sai arvoisensa ja tyylikkään kuoren. Nyt ei puhelin tipu kourasta. On sopivan karhea, eikä tee puhelimesta liian raskasta. Aivan ihana!😀🤗
Kaunis ja kestävä kuori magsafe-lisällä. Paras tuote !
Kaunis ja toimiva!
Kunnon tervaa,ei litkua.
Ensimmäisen Lastun ostin lahjaksi. Hämmästelin kun kehui, että kestänyt vuosia. Pitihän se tilata sitten itsellekin. Kaiverruksella tottakai! Särmä, kevyt, ryhdikäs ja persoonallinen.
Todella hyvä ja laadukas kuori
Jälleen hyvä ja näyttävä tuote
Hienot on kuoret ja hyvin istuu puhelimeen. 👍
Tosi hyvää kuori
Hyvä kuori
Pinkki kuori on tosi nätti ja kivan näköinen, siitä täydet pisteet! Kuoren mukana tilaamani sormipidike on hieman haastava käyttää siinä mielessä että siitä renkaasta on tosi vaikea saada otetta sitä ylös nostettaessa. Joudun ammattini vuoksi pitämään kynnet ihan lyhyinä joten niistäkään ei ole apua tässä tapauksessa.
I ordered this cover for my spouse. She's a satisfied customer. Cover matches with color of her phone. 5/5. Thank you Lastu
Olen tosi tyytyväinen ostokseeni ja suosittelen teitä muillekin. On hienoa että tämä uniikki omalla kuvalla.
Huikean arvokkaan ja kotimaisen oloinen tuote, aktiivireserviläisen omalla twistillä.
On hieno
Halusin uniikin kuoren ja latasin suunnittelemani logon. Jälleen kerran huippuluokan jälkeä.
Täydellinen!😍
Nyt on lemmikki aina mukana❤️
Olin todella tyytyväinen kuoreen ja näinä aikoina kun valitsin kuoreen myös suomen vaakunan, voi olla isänmaallinen ja näyttää sen myös muille! Olen tilannut ennenkin. Kiitos tästä! Tomppa
- ihanan tuntuinen käteen - tyylikkään näköinen - pitkien sivujen rypyläpinta hyvä, niin ei luista alustoilla - volume&on/off näppäinten päälle tuli uudet painikkeet, jotka suojaa alkuperäisiä mun kynnellä painamiselta - magneetin vivun saa sovellettua vanhaan autossa olevaan adapteriin
Kauniit kuoret uniikilla kaiverruksella lemmikistä 🩷
Varmaan kymmenes lastu minulle. Sopivuus 5/5.
Hyvin siirrety kuva, nökyy hyvin.
On upeet hiilikoivut, jokka hohtaa hieman pimeessä.
Tarkka kuvionti myös pienissä yksityiskohdissa 👍🏻 Joku suojaava pintakäsittely saisi olla.
Tykkään paljon varsinkin glow ominaisuus on todella hieno
Lastun puhelimenkuoret eroavat kivasti niin sanotuista perus puhelimenkuorista. Puu tekee kuorista uniikit sekä magsafe lisä on erittäin kätevä päivittäises käytössä.
Kuori ja siihen tehty kaiverrus ovat ensiluokkaisen tyylikkäät. Kuoreen otin MagSafe ominaisuuden ja lisävarusteeksi sormipidikkeen. Sormipidike on ollut ihan ok. Popsockettiin tottuneena tämä metallinen on vaatinut totuttelua kun terävähkö kulma painaa kiitettävästi sormeen. Lisäksi pidikkeen sarana on jo nyt löystynyt mikä vähentää käyttömukavuutta huomattavasti.
Laadukkaasti tuotettu kuorenkuva Costa Rican auringonlaskusta hiekkarannalla.
Upea kuori, kiitos taas!
Kotelo on todella kaunis ja istuu hyvin. Hienoa että pystyy käyttämään myös omia kuvia koteloon. Saa ikuistettua mukavia muistoja ja kotelo on tämän jälkeen enemmän kuin pelkkä 'kotelo'.
Kuori oli sellainen kuin ajattelin
Kiitos paljon, kuori on erityinen ja kaunis. Oululainen miniäni taiteili siihen toiveestani kuvan männystä. Ainut huoleni on, että miten se kestää kosteutta? Joskus joutuu vastaamaan puhelimeen sateessakin. Voiko/kannattaako sitä käsitellä jollakin aineella?
On kyllä siisti ja toimiva
Blogs
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Read moreabout iPhone 18 Pro and 18 Pro Max cases are now available to order
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Read moreabout Google Pixel 11, 11 Pro and 11 Pro XL cases are now at Lastu
Realme phone cases are coming to Lastu: GT 8 Pro, 16 Pro+, 16 Pro and 16
Realme joins the Lastu lineup in early September 2026. Genuine birch, Nordic craftsmanship, MagSafe functionality, and the market’s widest customization options – now also for Realme GT 8 Pro, 16 Pro+, 16 Pro, and 16.
Read moreabout Realme phone cases are coming to Lastu: GT 8 Pro, 16 Pro+, 16 Pro and 16
Genuine camouflage phone cases: M05, M04, MM14, Flecktarn, M90 and MultiCam
Lastu’s camo phone cases are cut from genuine military fabric, not a printed pattern. Seven fabrics from five countries: M05 woodland and snow pattern, M04 desert, Ukraine’s MM14, Germany’s Flecktarn, Sweden’s M90, and MultiCam. The history of the patterns, 500D Cordura, and why no two phone cases are alike.
Read moreabout Genuine camouflage phone cases: M05, M04, MM14, Flecktarn, M90 and MultiCam