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SL 03 Full Grain Black – cross strap slides in black full grain leather
1/9
Sandals

SL 03 Full Grain Black

Gains character over time

Regular price  €149 Sale price  €89
Black Friday.Sale.
4.4 27 reviews

BlackFull Grain Leather

Choose your size

Between sizes? Take the bigger size.

Size guide

Find your size.

Between sizes? Take the bigger size.

Sizes

EU UK US Foot in cm
39 5 6 24.8 – 25.3
40 6 7 25.4 – 25.9
41 7 8 26.0 – 26.6
42 8 9 26.7 – 27.2
43 9 10 27.3 – 27.7
44 10 11 27.8 – 28.3
45 11 12 28.4 – 29.0
46 12 13 29.1 – 29.7
47 13 14 29.8 – 30.4
48 14 15 30.5 – 31.1

This is the length of your foot, not of the shoe. The shoe is a little longer, so your toes have room.

Measure your foot

  1. Put a sheet of paper against a wall. Stand on it in socks, with your heel against the wall.
  2. Mark the tip of your longest toe.
  3. Measure from the wall to the mark and find that length in the table.

Measure at the end of the day, when your feet are at their largest.

Our team is happy to help Talk to one of us
  • Ships next working day, delivered the day after
  • Free delivery from €150 with DHL
  • Free exchange for your size
  • Handmade in Portugal, in a family-owned atelier

How does it fit?

Small
Large
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Frequently bought together.

Description

Two straps crossed over the foot, and nothing else asked of you. The SL 03 holds through the crossover rather than a buckle, which keeps the top of the foot open and the shape flat. An EVA sole, light enough to walk a city in and easy to travel with, and an onSteam® footbed that stays soft. Full-grain leather or suede.

Premium features
  • An EVA sole, light enough to walk a city in.
  • A ribbed outsole for grip on smooth ground.
  • Crossed straps that hold the foot without a buckle, so the top of the foot stays open.
  • No laces and no hardware, so you step in and go.
  • Handmade in Portugal, in a family-run factory. Designed in the Netherlands.
  • A full-grain leather upper that marks, then settles.
Show all 10 features
  • An onSteam® footbed that stays soft underfoot and moves moisture away.
  • The ETQ signature square, pressed into the strap.
  • A reusable travel bag comes in the box, for wherever the shoes go next.
  • Order one pair and the white box is the shipping box. No second carton to throw away.
Size & fit

Between sizes? Take the bigger size.

This advice comes from customers who wear this model and how they rate the fit.

View size guide

Material info

Full grain is the top layer of the hide, left intact. Nothing is sanded or buffed away, so the natural grain and the strongest fibres of the leather stay exactly where they are. That makes it the most durable leather finish there is. Our full grain is tanned by Curtumes Iberia in Alcanena, Portugal, an LWG Gold certified tannery, and every hide is inspected on finish, colour, surface and thickness before cutting. Small variations in grain and colour are natural, and proof the surface is untouched. It starts firm, softens with wear, and builds a patina that deepens over the years.

Care
  • Wipe clean with a soft, slightly damp cloth
  • Condition with leather cream now and then
  • If wet, let dry naturally, away from heat
Shipping & Delivery

We deliver Monday to Saturday: in the Netherlands with DHL, in Belgium with Bpost. Order before 23:59 on a working day and we ship the same day. Ordered on a Friday? It arrives on Saturday. Ordered at the weekend, before 23:59 on Sunday? It arrives on Monday.

Order before 23:59 and we ship your order the same working day.

Prefer to collect your order? Choose a pick-up point near you at checkout.

Good to know

  • We ship on working days. On New Year’s Day, King’s Day, Christmas Day and Boxing Day, we take a day off.
  • Delivery times are a guide. Very occasionally it takes a day longer, for example while your payment is still being processed.
  • We don’t deliver to PO boxes.

Insured in transit

Your order is insured until it reaches you. Sometimes we ask for a signature on delivery; from then on, the parcel is your responsibility. If someone else signs for you, their signature counts as proof of delivery.

Ordering from outside the EU?

Outside the EU (except the UK), you don’t pay Dutch VAT: the 21% comes off your order automatically at checkout, as soon as you enter your address or switch country or currency. Import duties and local taxes aren’t included; the carrier collects them on delivery (DDU). We can’t calculate or cover them in advance, so check with your local customs office what to expect.

Questions about shipping? Our customer service is happy to help.

Returns & exchanges

Return or exchange until 31 December

Ordered from 1 November? Register your return or exchange in our return portal by 31 December. You always keep at least 14 days after delivery. Exchanging for another size is free.

Good to know

  • Send your items back clean and unworn, with their tags and packaging. That way we can process them quickly.
  • Underwear can only be returned with the seal intact.
  • Returning more than one item? We charge a €2 handling fee for each extra item.
  • You can also send your return with your own carrier. Even so, we recommend our return portal: if your parcel goes missing on the way, we’re responsible, and we process your return faster. We can’t reimburse the cost of your own carrier.
  • Price difference because of a promotion? We make up for it with a voucher.
  • If an item doesn’t meet these conditions, we may refund it in part or not at all.

Returning from outside the EU?

Outside the EU (except the UK), any import duties or taxes on your return are yours to pay. More about returns

What our customers say
when wearing it

  • Torbellino

    Verified Buyer

    ★★★★★ · 14/10/2026

    Fit: True to size

    Excellent design and high-quality leather

    I'd been looking for this style of crossed sandals for a long time. They're very comfortable, yet elegant and delicate. I really liked that ETQ got the sizing recommendation just right. Made in Portugal with a Nordic design. Top-notch.

  • Ludovic

    Verified Buyer

    ★★★★★ · 24/09/2026

    "Top quality, top comfort"

    Beautiful leather, great finish—top-notch

  • Hank

    Verified Buyer

    ★★★★★ · 21/09/2026

    Fit: True to size

    Awesome

    Great fabric, good fit, and comfortable to wear. I highly recommend them.

  • Joost

    Verified Buyer

    ★★★★★ · 25/08/2026

    Fit: True to size

    high quality

    for day to day use in and around the house, not for long walks. Very comfy and well made, good quality material

  • Steven

    Verified Buyer

    ★★★★★ · 16/08/2026

    Fit: True to size

    Super

    Very comfortable and quality is perfect.

All customer reviews (27)
  • Jesse

    Verified Buyer

    ★★★★★ · 04/08/2026

    Nice flip-flops

    High-quality flip-flops that are extremely comfortable to walk in. Made of supple, soft suede with a flexible sole.

  • Edouard

    Verified Buyer

    ★★★★★ · 30/07/2026

    Fit: Runs small

    Top

  • Ruben

    Verified Buyer

    ★★★★★ · 24/07/2026

    Fit: Runs small

    Perfect

    Neat, stylish flip-flops. Good quality. They run a size smaller, though.

  • Customer

    Verified Buyer

    ★★★★★ · 19/07/2026

    Fit: True to size

    Cross-strap sandals

    Beautiful products that look sturdy and high-quality

  • Marcel

    Verified Buyer

    ★★★★★ · 18/07/2026

    Fit: Runs small

    Amazing quality

    Products are always of high quality, great brand. I needed one size above sneaker size.

  • Robin

    Verified Buyer

    ★★★★★ · 10/07/2026

    Nice flip-flops

    A beautifully crafted slipper that's comfortable. Order one size larger than your usual shoe size.

  • Hans

    Verified Buyer

    ★★★★★ · 08/07/2026

    Fit: True to size

    Sandals

    Great shoes, and the delivery was fast 👍. I'd definitely buy from here again...👍

  • Hamid

    Verified Buyer

    ★★★★★ · 07/07/2026

    Fit: True to size

    Fast delivery

    Top quality and fast delivery

  • Bilal

    Verified Buyer

    ★★★★★ · 04/07/2026

    Fit: Runs small

    Great quality and comfortable to wear

    These are really comfortable and cute flip-flops; I would recommend getting a size larger than your usual size. Other than that, I'm satisfied with the customer service.

  • M

    Verified Buyer

    ★★★★★ · 02/07/2026

    Fit: Runs small

    Good

    Great quality. Unfortunately it was too small and i had to send it back. It has been weeks and the next size up is out of stock, so I can't get a new pair. Apart from that,all great.

  • Liesbeth

    Verified Buyer

    ★★★★★ · 01/07/2026

    Fit: Runs small

    Stylish, quality and comfort

    Surprised bij the combination of 3 elements that make shoes an eyecatcher or not. My husband gets lots of compliments. Take one size bigger.

  • c

    Verified Buyer

    ★★★★★ · 28/06/2026

    Fit: True to size

    Awesome

    Great fit, comfortable flip-flops

  • B.

    Verified Buyer

    ★★★★★ · 24/06/2026

    Fit: True to size

    The perfect Slipper

    These are really really nice. They look great, walk really softly and you can were them under anything. Also for a casual night out on the terrace. Very happy with them.

  • Stefano4-Italy

    Verified Buyer

    ★★★★★ · 20/06/2026

    Fit: True to size

    High quality and elegant

    Product presents itself very well and elegant. Size wise i wear a 43 and ordered a 43 which matched my foot.

  • Davide

    Verified Buyer

    ★★★★★ · 19/06/2026

    Beautiful

  • Matteo

    Verified Buyer

    ★★★★★ · 16/06/2026

    Fit: True to size

    Magnificent sandals

    I dont’t usually like sandals, but when I saw these in the photo, I was intrigued and wanted to try them. I wasn’t wrong, they’re gorgeous, elegant, super comfortable and super soft. I’m very satisfied

  • Brad

    Verified Buyer

    ★★★★★ · 15/06/2026

    Fit: True to size

    Stylish, comfortable sandal.

    These are really comfortable and smart sandal. Quick delivery as always from ETQ.

  • Paul

    Verified Buyer

    ★★★★★ · 28/05/2026

    Fit: True to size

    Highly recommended!

    The suede slippers are surprisingly comfortable and soft to the touch. The finish looks neat and the material gives a luxurious look. They walk comfortably, even with longer wear, and combine easily with casual outfits. Good value for money and definitely recommended for daily wear.

  • Customer

    Verified Buyer

    ★★★★★ · 03/10/2026

    Fit: Runs small

    Flop

    Size too small. The size was nowhere printed on the shoes, at the sole for example. The “Made in …” was nowhere printed, at the sole for example.

  • Customer

    Verified Buyer

    ★★★★★ · 20/09/2026

    Fit: Runs small

    Not the value for the price I expected

    I bought a pair of flip-flops for almost €100, but after wearing them for a week, nearly half the tread is gone. The sole is just too soft. I checked the link below the size chart to see which size I should order, but unfortunately, they were still too small. So the sizing guide isn’t accurate—if you decide to buy these, go up a size.

  • Customer

    Verified Buyer

    ★★★★★ · 24/06/2026

    Runs small

    It runs two sizes too small—too bad that isn't mentioned!

  • Johannes

    Verified Buyer

    ★★★★★ · 22/06/2026

    Fit: Runs large

    not as comfortable as the sneakers

    these are not so comfortable as I am used to

Handmade in Portugal.

From a family atelier, by makers who do little else.

Read more

One box. Nothing wasted.

Order one pair and the box is the parcel. Inside, a reusable ETQ travel bag.

Read more

Our leathers.

Where our leather comes from, how it wears and why no two pairs are exactly the same.

Read more

Questions about the SL 03 Full Grain

How does the SL 03 fit?

Between sizes? Take the bigger size. The crossed straps soften after a few wears.

Will full-grain leather give a little?

Yes, a little. It softens and shapes to your foot as you wear it. It marks along the way, then settles and holds its shape for years: that is how it gains character. The length stays the same, so choose your size on length.

How do I look after full-grain leather?

Wipe it with a soft, slightly damp cloth after wearing and let it dry at room temperature, away from the heater. Use a neutral leather cream every few months to keep it supple. Skip household cleaners and the washing machine. Full-grain leather is a natural material, so small marks and colour differences between batches are normal.

How do the SL 03 straps hold the foot?

Two crossed straps hold the foot without a buckle, so the top of the foot stays open. An EVA sole keeps it light, a ribbed outsole gives grip on smooth ground, and an onSteam® footbed stays soft underfoot.

How do returns work if it doesn't fit?

Open our return portal and choose your new size: it ships as soon as your return is on its way, and you don't need to place a new order. Prefer a different colour or model? Choose store credit and order again, or choose a refund. Costs per country are on our returns page.

Is there a warranty on my ETQ product?

Yes, manufacturing defects are covered by the statutory warranty. Something not right? Send us a photo and your order number and we’ll find a solution together. Normal wear and damage from use are not covered.

Do you have a store?

We don't have our own store: ETQ is online only. You order here and try everything on at home. If it isn't right, you can exchange or return it through our return portal.

Something not right? Tell us.

We’ll sort it out with you. And it goes back to the studio, so the next version is better.

  • We’re here for you

    Something not quite as you hoped? We’ll look at it together.

  • Between two sizes

    Tell us what you normally wear and we’ll give you our honest advice.

  • Send a photo

    With your order number. We’ll look at it and tell you what we see.

  • A solution that suits you

    We’ll find what works for you, not what’s easiest for us.

Questions about this model?

Get a direct answer about the SL 03 Full Grain Black: size, material, care and more.

Our team is happy to help Talk to one of us

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