Built for the round trip.
Getting a phone back from a consumer isn't one packaging problem. It's three. Whether you're buying it or repairing it, one box has to solve them all.
- It has to make sending the phone feel safe, or it never gets sent.
- It has to protect the phone both ways, to your bench and back home again.
- It has to make the trip again and again, because that's where reuse pays.
That's a lot to ask of a box. Swappie tested Haku against its old box and saw more devices sent in, in every market.
Work out your cost per use
Phones back from consumers.
Haku (C2B)
Haku is a reusable pack for bringing phones back from consumers, for trade-in, repair or service. A moulded tray holds the phone, the cover folds over it, and the sending instructions are printed right where the customer needs them. One size fits every smartphone, with no inserts. It's built to make 10 trips.
€3.95 per box, excl. VAT
From the people who packed it
Don't take our word for it. Take 880 of theirs.
Every Haku has a QR code that opens the sending instructions. Once the phone is packed, people can rate how it went. Most of them have never used a reusable box before. Here's what they told us.
4.7average out of 5
880ratings since April
86%gave five stars
13countries
5 out of 5
Wie beim Überraschungs Ei, einfacher geht es nicht. Danke.
Like a Kinder Surprise. It doesn't get any simpler. Thanks.
5 out of 5
Tosi hyvä ja hauska pakata!!
Really good, and fun to pack!!
5 out of 5
Facilissimo.
So easy.
5 out of 5
Ging heel makkelijk en raad het zeker aan!
Went very smoothly. I'd definitely recommend it!
5 out of 5
Really good, easy to follow.
5 out of 5
Einfach nur top, da gibt es denke ich nichts mehr zu verbessern.
Just great. I don't think there's anything left to improve.
Not every score is a five. The low ones mostly point at the return label or the outer envelope, not the box. We read every one, and they go straight to the product team.
Ratings from Swappie customers sending phones in Haku, April to November 2026. Quotes in the original language, with our translation.
It's not the price you pay. It's the cost per use.
A single-use box costs the same every time, because you only use it once.
Haku is made to travel again and again. So what matters is what each trip costs you. That depends on how many boxes come back, and how fast. Put in your numbers and see.
The share of customers who actually send their phone back.
From the day a box leaves you to the day it's back and ready to go out again.
Haku costs €3.95 per box, excluding VAT. Each box is built to make 10 trips.
With your numbers, each box gives you about
3.1 uses
So your price per use is
€1.28
€3.95 per box ÷ 3.1 uses
A box can last 10 trips. At your return rate, 25% of boxes don't come back, so on average each one gives you about 3.1 uses. At this speed, a box makes about 4.3 trips a month.
Don't compare box prices. Compare results.
A single-use box is made to go one way. Haku is made to come back.
So the real question isn't which box is cheaper. It's which one brings more phones back, in better shape. The only way to know is to test it.
Run an A/B test against your current packaging.
Tell us where you are today. We'll set up a trial that sends Haku to part of your customers and your current box to the rest, then compare what comes back.
Your calculator numbers are sent with the request, so we start from your volumes.