The Bill Ringa Fold Rotterdam is handmade in Portugal from 100% natural lambswool felt that moulds to your feet for a natural fit, keeping them dry, warm and comfortable. Its adaptable heel lets you choose between a relaxed slip-on or a more secure fit, while the sturdy sneaker sole makes these wool house shoes just as reliable outdoors as indoors.
Updated in 2022 with refinements to the instep and linework, the Fold Rotterdam now carries a sleeker, more contemporary profile.
The grey mélange of natural lambswool, left entirely undyed, pairs effortlessly with the white sole for a clean, refined look. Grey has long been one of the most popular choices for Bill Ringa wool house shoes, valued for its neutral versatility that complements almost any outfit. Owing to high demand, the white sole has now been reintroduced, giving this timeless shade a fresh and striking balance of colour and comfort.
Rotterdam. Built on concrete and steel, shaped by the harbour and carried by people who call it as they see it. No frills, just raw simplicity and strength. The Fold Rotterdam captures that spirit: a grey upper reflecting the city’s grit, grounded on a white sole that stands for clarity and new beginnings. A combination as honest and uncompromising as Rotterdam itself — bold, functional, and effortlessly comfortable.
Color upper
Color sole
SKU
EAN
Origin
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The Bill Ringa Fold Rotterdam is handmade in Portugal from 100% natural lambswool felt that moulds to your feet for a natural fit, keeping them dry, warm and comfortable. Its adaptable heel lets you choose between a relaxed slip-on or a more secure fit, while the sturdy sneaker sole makes these wool house shoes just as reliable outdoors as indoors.
Updated in 2022 with refinements to the instep and linework, the Fold Rotterdam now carries a sleeker, more contemporary profile.
The grey mélange of natural lambswool, left entirely undyed, pairs effortlessly with the white sole for a clean, refined look. Grey has long been one of the most popular choices for Bill Ringa wool house shoes, valued for its neutral versatility that complements almost any outfit. Owing to high demand, the white sole has now been reintroduced, giving this timeless shade a fresh and striking balance of colour and comfort.
Rotterdam. Built on concrete and steel, shaped by the harbour and carried by people who call it as they see it. No frills, just raw simplicity and strength. The Fold Rotterdam captures that spirit: a grey upper reflecting the city’s grit, grounded on a white sole that stands for clarity and new beginnings. A combination as honest and uncompromising as Rotterdam itself — bold, functional, and effortlessly comfortable.
Color upper
Color sole
SKU
EAN
Origin
Placeholder
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Wool’s natural resistance to water and dirt makes these felted wool slippers strong enough to handle a light shower. To keep them fresh, simply wipe with a damp cloth or hand-wash gently in cold water with a wool detergent.
The Bill Ringa cupsole, crafted from durable rubber, also resists dirt — one quick wipe after outdoor wear keeps your wool house shoes looking clean and ready.
In Felgueiras — the historic heart of Portuguese shoemaking — Bill Ringa slippers are handcrafted by Perfect Eject. Skilled artisans cut, stitch, and shape pure wool felt with care, drawing on generations of tradition. Each pair of wool slippers reflects comfort, durability, and the craftsmanship Portugal is famous for.
Free shipping and returns in The Netherlands.
Orders are processed within 24 hours after order confirmation.
1 – 2 working days within The Netherlands.
Returns are free within The Netherlands and accepted within 14 days of delivery.
The return procedure is described in our
returns policy.
For shipping times, costs and return conditions outside The Netherlands, click here to open the International overview.
International returns are accepted within 14 days of delivery. Return shipping costs are at the customer’s expense. The return procedure is described in our returns policy.
For full details, please see our complete shipping page and returns page.
Each Bill Ringa slipper has a removable insole — its length in cm and inches is shown below. Measure the insole of a pair you wear comfortably and compare it with the table. Between two sizes? Choose the larger one for a relaxed fit.
| Length insole | EU | US | UK | JP |
|---|---|---|---|---|
| 27.810.94 | 41 | 8–8.5 | 7–7.5 | 26–26.5 |
| 28.211.10 | 42 | 9 | 8 | 27 |
| 29.011.42 | 43 | 10 | 9 | 27.5 |
| 29.611.65 | 44 | 10.5 | 9.5 | 28 |
| 30.211.89 | 45 | 11.5 | 10.5 | 29 |
| 30.812.13 | 46 | 12–12.5 | 11–11.5 | 29.5–30 |
Note: tap on CM or inches to view lengths, and on US / UK / JP to explore equivalent sizes.
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