SILICA
SILICA
Only 3 left in this size
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Why 80% off?
We are closing the workshop. Every pair still on the shelf leaves at a fraction of what it cost to make, and when a size is gone it will not be made again. Not a promotion — a farewell on our own terms.
Description
Designed for the man who appreciates style with subtle height enhancement, these SILICA Sport Sneakers offer up to 3.95 inches / 10 cm of hidden lift in a classic, breathable design.
✅ Height Boost: Discreet 3.95 inches / 10 cm or 3.15 inches / 8 cm lift for added height
✅ Breathable Mesh: Lightweight air mesh upper for ventilation
✅ Comfort Fit: True-to-size fit with soft, light design
✅ Anti-Odor: Built-in sweat-absorbent and odor-resistant features
Details
- Adds roughly 5–8 cm of height
- Rise built into the sole, hidden from view
- Cushioned inner lift for all-day comfort
- Looks like an ordinary shoe from the outside
- 1-year warranty on construction
Fit & sizing
Fits true to size – take your usual size
If you are between two sizes, take the larger one — leather softens and moulds to your foot within the first week.
Care
- Wipe the upper with a soft, slightly damp cloth after wear.
- Let them air out between wears to keep the inner lift fresh.
- Store in the travel bag away from direct heat and sunlight.
SILICA
| US | UK | EU | JP (cm) | Inch |
|---|---|---|---|---|
| 5 | 4.5 | 37.5 | 23 | 9.1 |
| 5.5 | 5 | 38 | 23.5 | 9.3 |
| 6 | 5.5 | 39 | 24 | 9.4 |
| 6.5 | 6 | 39.5 | 24.5 | 9.6 |
| 7 | 6.5 | 40 | 25 | 9.8 |
| 7.5 | 7 | 40.5 | 25.5 | 10.0 |
| 8 | 7.5 | 41 | 26 | 10.2 |
| 8.5 | 8 | 42 | 26.5 | 10.4 |
| 9 | 8.5 | 43 | 27 | 10.6 |
| 9.5 | 9 | 43.5 | 27.5 | 10.8 |
| 10 | 9.5 | 44 | 28 | 11.0 |
| 10.5 | 10 | 44.5 | 28.5 | 11.2 |
| 11 | 10.5 | 45 | 29 | 11.4 |
| 11.5 | 11 | 45.5 | 29.5 | 11.6 |
| 12 | 11.5 | 46 | 30 | 11.8 |
How to measure your feet
1. Wear the socks you usually pair with these shoes.
2. Place your foot on a sheet of paper and trace its outline.
3. Measure from the heel to the longest toe with a ruler.
4. Match your measurement to the table and adjust for foot shape. The CM and inch values correspond to your foot's length, not the shoe's internal length.
Adjust for foot shape
– Normal: choose the size closest to your measurement.
– Wide and/or high instep: choose a full size larger than your nearest measurement.
– Narrow: choose the size closest to your measurement.
Need help? Use the chat in the bottom-right corner and we will size you before you order.
Without
With ALTAN
Height depends on the version you choose.
Silica · Sport
Easy height, easy style
A clean sport sneaker with a hidden lift inside, made to go with relaxed weekend outfits.
Fresh all day
Breathes as you walk
Lightweight air mesh for ventilation, with a lining that absorbs sweat and keeps odour away.
ALTAN · Closing
This pair is made for the last time.
We are closing the workshop, and there is no restock. When this size sells out, it is gone for good.
The shop is still open. Every order still ships, free, anywhere in the world.
What our customers say
Real photos from our customers
Didn't think anyone would notice the extra height, and that's the whole point. I just look a bit taller — no one asks how.
On my feet all day at a conference and the inner lift never bothered me. Comfortable from the first hour.
I'm 5'7 and these quietly put me near 5'10. I stand straighter, feel better in photos, and nobody can tell.
Bought a pair for a wedding and now I wear them everywhere. They look like a normal shoe — that's what sold me.
Second pair already. The height is subtle enough that even up close they just look like good shoes.
Was skeptical about the comfort but the cushioning is real. Walked airport to hotel without switching shoes.
Fit true to size and gave me the few centimetres I wanted without the clunky look other brands have.
Honestly a confidence thing — same outfit, a bit more height, I feel sharper. Shipping was quick too.
Frequently Asked Questions
Everything you need to know about the closing sale, height, sizing, shipping, returns and warranty.
ALTAN is closing its doors. Every pair still on the shelf leaves at a fraction of what it cost to make, and the 80% is already reflected in the price you see. Not a promotion. A farewell on our own terms.
Each pair adds roughly 5 to 8 cm — built into the sole with a cushioned inner rise. From the outside they look like an ordinary shoe; the height is only felt by you.
Every product page has its own size guide with EU, UK, US and centimetre conversions. Our shoes run true to size; if you are between two sizes, take the larger one.
No. This is the final run. Each size was made once and will not be produced again. When a size sells out, it leaves the site for good.
Orders are dispatched within 1 to 2 business days. We offer free worldwide shipping, with delivery typically taking 7 to 15 business days. You will receive a tracking link as soon as your order ships.
You have 30 days to return your order for a full refund if the fit is not right. Try them on indoors on a clean surface to keep them returnable.