BioWorld
CHAD Black Barefoot Sandals
CHAD Black Barefoot Sandals
*Not sure about the size?
Check out our size chart or just drop us a message - we’re happy to help!
Fewer returns = fewer CO₂ emissions 🌱
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Materials:
Upper - Plant-based microfiber from the Giardini Eco
Insole - Microfiber suede from the On Micro
Sole - Vibram’s Supernew Flex, 4 mm
*Restock arriving mid-May.
Tap “Notify Me” on your size to be the first to know when it’s back in stock.
Step into summer with CHAD Black, a pair of women's vegan barefoot sandals designed by BIOWORLD for everyday comfort and freedom. Handcrafted in Spain, these black vegan barefoot sandals combine a minimalist look with a natural feel that your feet will thank you for. Equipped with an adjustable strap system, CHAD offers a secure, personalised fit while remaining ultra-lightweight. Straps are fully adjustable, allowing you to dial in the perfect fit for your foot width - ideal for wider feet or those in between sizes.
The 4 mm Vibram flat grippy sole delivers just the right amount of protection without losing ground contact - ideal for those seeking the best vegan Birkenstock alternative with a truly barefoot experience. A perfect choice for anyone looking for women's black vegan barefoot sandals, black adjustable strap barefoot sandals, plant-based black Birkenstock alternative, or sustainable black minimalist sandals for summer walking and travel.
▶ Delivery Terms
Once you’ve completed your order, we’ll carefully pack it to ensure it arrives safely and send it via Royal Mail. Delivery usually takes 3–4 business days, excluding Sundays and public holidays.
▶ Return Policy
We offer a free return service throughout the UK within 30 days of delivery.
- Log in to your account on our store’s website.
- Submit a return request for the item you'd like to return.
- Once we receive your request, we will send you a prepaid return label. Label is valid for 7 days.
- Use this label to return your shoes free of charge.

Bioworld sizes chart

| UK size | EU size | Length (cm) | Width (cm) |
| 3.5 | 36 | 23,7 | 9,1 |
| 4.5 | 37 | 24,5 | 9.4 |
| 5.5 | 38 | 25,2 | 9,7 |
| 6 | 39 | 25,7 | 9,9 |
| 7 | 40 | 26,3 | 10,1 |
| 8 | 41 | 26,9 | 10,3 |
| 8.5 | 42 | 27,4 | 10,5 |