Blusun 040W Black Smooth Leather Boot
Brand: Blusun
Secure your pair of the new BLSN-040W barefoot boot in classic black smooth leather. Handcrafted in Portugal and delivered direct to your door as soon as our shipment arrives in mid-October.
Status: Pre-order open now.
Estimated Delivery: Mid-October 2026. Free UK delivery on orders over £130.
The Blusun BLSN-040W is a high-cut women's barefoot lace-up boot crafted in Portugal from premium, Terracare®-certified smooth German leather in timeless deep black. Designed for transitional seasons and everyday versatile wear, it combines an urban worker-inspired profile with an inner side zip for easy daily use, finished with a subtle red pull tab at the heel.
Key Features- Anatomical wide toe box: Gives your toes generous room to spread and splay naturally, promoting balanced posture and healthy foot mechanics
- Terracare®-certified German leather: High-grade, environmentally tanned smooth leather engineered for durability and natural weather resistance
- Lightweight OnSteam® microfibre lining: Soft, breathable, and skin-friendly microfibre that manages moisture efficiently without bulky insulation
- Flat flexible TPU sole: 4mm midsole paired with a 1mm tread provides natural flexibility, ground feedback, and reliable grip on autumn paths
- Zero-drop construction: Completely flat profile from heel to toe to support neutral posture and natural alignment
- Effortless on and off: Full seven-eyelet lace-up front allows precise ankle and instep adjustment, while the discreet inner zip ensures quick daily wear
- Ethical European craftsmanship: Handcrafted under fair conditions in a family-run workshop in Portugal
| Feature | Specification |
| Upper | Terracare®-certified smooth leather (German origin, deep black) |
| Lining | Lightweight OnSteam® microfibre (breathable and moisture-regulating) |
| Outsole | Flexible TPU sole (4mm midsole + 1mm tread) |
| Fastening | 7-eyelet lacing with inner side zip and red heel pull tab |
| Drop | 0mm (zero-drop) |
| Origin | Handcrafted in Portugal |
| Care | Arrives pre-treated; no waterproofing needed before first wear. Clean with warm water and a soft brush; wipe dry and allow to air dry naturally. Condition occasionally with natural leather balm |
Powered by the BarefootBrit Fit System™
Measure your foot length and width in millimetres and compare with the internal shoe measurements below. As a general recommendation, we suggest adding 10-12mm of comfort room to your foot length for the ideal barefoot fit.
Women's Sizing| EU | UK | Inner Length (mm) | Inner Width (mm) |
| 36 | 3 | 237 | 89 |
| 37 | 4 | 244 | 90 |
| 38 | 5 | 251 | 92 |
| 39 | 6 | 258 | 93 |
| 40 | 6.5 | 264 | 95 |
| 41 | 7.5 | 271 | 97 |
| 42 | 8 | 278 | 101 |
| 43 | 9 | 283 | 103 |
Blusun lasts are shaped to adapt to your foot's natural volume in both length and width. Choose the size that comfortably accommodates your foot at its widest point.
Sizing & Fit
Powered by the BarefootBrit Fit System™
- Women's EU Sizing: Available from EU 36 to EU 43 (UK 3 to UK 9).
- Fit Profile: Wide, foot-shaped anatomical toe box that allows your toes to splay naturally with zero compression.
- Sizing Recommendations: Measure your foot length and width in millimetres. We recommend adding 10-12mm to your foot length for the ideal barefoot fit as a general recommendation.
- Volume & Last: Blusun lasts are shaped to adapt naturally to your foot's volume in both length and width. Choose the size that comfortably accommodates your foot at its widest point.
- Pre-Order Note: This boot is on pre-order with estimated delivery in mid-October.
Materials & Care
- Upper: Terracare®-certified smooth leather (German origin, environmentally friendly tanned)
- Lining: Lightweight OnSteam® microfibre for breathable, moisture-regulating climate
- Outsole: Flat, flexible TPU sole (4mm base + 1mm tread for ground feedback), made in Portugal
- Fastening: Seven-eyelet lace-up front with inner side zip for easy on/off
- Drop: 0mm (True Zero-Drop)
- Origin: Handcrafted under fair conditions in a family-run Portuguese workshop
Pre-Treated Leather: The boot arrives pre-treated from the factory and does not require waterproofing spray before first wear.
Cleaning: Remove dirt and mud using warm water and a soft brush. Wipe gently with a dry cloth and allow to air dry naturally away from direct heat sources.
Conditioning: Condition occasionally with a natural leather cream or balm to keep the smooth leather nourished and supple.
About the Brand
Blusun is a Portuguese barefoot footwear brand crafting premium minimalist shoes with a commitment to natural movement, sustainability, and ethical European production. Handcrafted in a family-run workshop in Portugal under fair conditions, every pair features a true zero-drop sole, wide anatomical toe box, and highly flexible construction - designed to give your feet complete freedom to move naturally.
From everyday sneakers to water-repellent suede boots, Blusun uses certified European materials, German-engineered soles, and sustainable leathers to create barefoot footwear that never compromises on style or foot health.
Product Specifications
- Zero Drop: Yes
- Toe Box Shape: Foot-shaped
- Flexibility: High
- Sole Thickness: 5.0mm
- Water Resistance: Water-repellent
Blusun 040W Black Smooth Leather Boot
Powered by the BarefootBrit Fit System™
Blusun Boot
Good for wide feet
Enter your longest foot length and we'll recommend the best size for this specific shoe.
| EU Size | UK Size | Insole (cm) | Width (cm) |
|---|---|---|---|
| 36 | 3 | 23.7 | 8.9 |
| 37 | 4 | 24.4 | 9.0 |
| 38 | 5 | 25.1 | 9.2 |
| 39 | 6 | 25.8 | 9.3 |
| 40 | 6.5 | 26.4 | 9.5 |
| 41 | 7.5 | 27.1 | 9.7 |
| 42 | 8 | 27.8 | 10.1 |
| 43 | 9 | 28.3 | 10.3 |
Frequently Bought Together
Blusun 040W Black Smooth Leather Boot
£164.99
This item
Aira Basics Barefoot White Crew Sock
£11.00
Maro Organic Cotton Crew Toe Socks
£12.00
Maro Organic Cotton No Show Toe Socks
£12.00
Description
Pre-Order Now - Estimated Delivery Mid-October
Secure your pair of the new BLSN-040W barefoot boot in classic black smooth leather. Handcrafted in Portugal and delivered direct to your door as soon as our shipment arrives in mid-October.
Status: Pre-order open now.
Estimated Delivery: Mid-October 2026. Free UK delivery on orders over £130.
The Blusun BLSN-040W is a high-cut women's barefoot lace-up boot crafted in Portugal from premium, Terracare®-certified smooth German leather in timeless deep black. Designed for transitional seasons and everyday versatile wear, it combines an urban worker-inspired profile with an inner side zip for easy daily use, finished with a subtle red pull tab at the heel.
Key Features
- Anatomical wide toe box: Gives your toes generous room to spread and splay naturally, promoting balanced posture and healthy foot mechanics
- Terracare®-certified German leather: High-grade, environmentally tanned smooth leather engineered for durability and natural weather resistance
- Lightweight OnSteam® microfibre lining: Soft, breathable, and skin-friendly microfibre that manages moisture efficiently without bulky insulation
- Flat flexible TPU sole: 4mm midsole paired with a 1mm tread provides natural flexibility, ground feedback, and reliable grip on autumn paths
- Zero-drop construction: Completely flat profile from heel to toe to support neutral posture and natural alignment
- Effortless on and off: Full seven-eyelet lace-up front allows precise ankle and instep adjustment, while the discreet inner zip ensures quick daily wear
- Ethical European craftsmanship: Handcrafted under fair conditions in a family-run workshop in Portugal
Specifications
| Feature | Specification |
| Upper | Terracare®-certified smooth leather (German origin, deep black) |
| Lining | Lightweight OnSteam® microfibre (breathable and moisture-regulating) |
| Outsole | Flexible TPU sole (4mm midsole + 1mm tread) |
| Fastening | 7-eyelet lacing with inner side zip and red heel pull tab |
| Drop | 0mm (zero-drop) |
| Origin | Handcrafted in Portugal |
| Care | Arrives pre-treated; no waterproofing needed before first wear. Clean with warm water and a soft brush; wipe dry and allow to air dry naturally. Condition occasionally with natural leather balm |
Size Guide
Powered by the BarefootBrit Fit System™
Measure your foot length and width in millimetres and compare with the internal shoe measurements below. As a general recommendation, we suggest adding 10-12mm of comfort room to your foot length for the ideal barefoot fit.
Women's Sizing
| EU | UK | Inner Length (mm) | Inner Width (mm) |
| 36 | 3 | 237 | 89 |
| 37 | 4 | 244 | 90 |
| 38 | 5 | 251 | 92 |
| 39 | 6 | 258 | 93 |
| 40 | 6.5 | 264 | 95 |
| 41 | 7.5 | 271 | 97 |
| 42 | 8 | 278 | 101 |
| 43 | 9 | 283 | 103 |
Blusun lasts are shaped to adapt to your foot's natural volume in both length and width. Choose the size that comfortably accommodates your foot at its widest point.
Sizing & Fit
Powered by the BarefootBrit Fit System™
- Women's EU Sizing: Available from EU 36 to EU 43 (UK 3 to UK 9).
- Fit Profile: Wide, foot-shaped anatomical toe box that allows your toes to splay naturally with zero compression.
- Sizing Recommendations: Measure your foot length and width in millimetres. We recommend adding 10-12mm to your foot length for the ideal barefoot fit as a general recommendation.
- Volume & Last: Blusun lasts are shaped to adapt naturally to your foot's volume in both length and width. Choose the size that comfortably accommodates your foot at its widest point.
- Pre-Order Note: This boot is on pre-order with estimated delivery in mid-October.
Materials & Care
- Upper: Terracare®-certified smooth leather (German origin, environmentally friendly tanned)
- Lining: Lightweight OnSteam® microfibre for breathable, moisture-regulating climate
- Outsole: Flat, flexible TPU sole (4mm base + 1mm tread for ground feedback), made in Portugal
- Fastening: Seven-eyelet lace-up front with inner side zip for easy on/off
- Drop: 0mm (True Zero-Drop)
- Origin: Handcrafted under fair conditions in a family-run Portuguese workshop
Pre-Treated Leather: The boot arrives pre-treated from the factory and does not require waterproofing spray before first wear.
Cleaning: Remove dirt and mud using warm water and a soft brush. Wipe gently with a dry cloth and allow to air dry naturally away from direct heat sources.
Conditioning: Condition occasionally with a natural leather cream or balm to keep the smooth leather nourished and supple.
About the Brand
Blusun is a Portuguese barefoot footwear brand crafting premium minimalist shoes with a commitment to natural movement, sustainability, and ethical European production. Handcrafted in a family-run workshop in Portugal under fair conditions, every pair features a true zero-drop sole, wide anatomical toe box, and highly flexible construction - designed to give your feet complete freedom to move naturally.
From everyday sneakers to water-repellent suede boots, Blusun uses certified European materials, German-engineered soles, and sustainable leathers to create barefoot footwear that never compromises on style or foot health.
Shipping & Returns
Pre-Order Shipping: Estimated delivery mid-October 2026. Free UK delivery on orders over £130 with tracked shipping.
Returns accepted within 30 days of receiving your boots — items must be unworn and in original packaging. Visit our Shipping and Returns page for full details.
Need to return an item? Get in touch and we'll help you sort it out. Email us at hello@barefootbrit.shop with your order number and we'll guide you through the process.
Email Us to Arrange a ReturnNot Sure of Your Size? Start Here
Barefoot shoe sizing works differently from standard high-street brands. Measuring your feet in centimetres is the essential first step to getting the right fit.
The Wall & Paper Method
A simple 5-step process you can do at home with just a piece of paper, a pencil, and a ruler.
Room to Move
Adults need 0.8–1.2cm of space; kids need 0.8–1.5cm of growing room beyond their foot length.
Width Matters
Barefoot shoes have wide toe boxes, but width fitting is just as important as length for comfort.
Customer Reviews
Very comfortable, I wasn't sure I would like the feeling of them but I don't notice them on and love the fact that they are not too tight around the top either.
Excellent customer service, swift dispatch and delivery, highly recommended, will definitely buy from them again. Thank you.
Lovely socks and brilliant customer service. Thank you!
Fast delivery
My daughter loves them
Perfect
Super comfortable, I have sensory issues and socks have long been a struggle - I plan to switch over to these completely
Lovely socks… I’m now a total convert to toe socks, they are so comfortable! These are great for summer in trainers, breathable and just the right height. I’m about to buy more.
Helpful friendly and easy
Great socks, comfortable and not restrictive on the toes.
So comfortable,I need more!
Great customer service and so friendly. If you have a problem they are quick to sort it out with ease. Amazing people. Love you all. Thanks for bringing this shop to life. Dan is amazing.
They are great quality and so comfy. My daughter HATES mainstream socks because of the bar across the toe section but absolutely LOVES these. Thank you so much.
Great socks, very comfy. Just need more variety instead of basic black or white
Easy to use. Delivery was good too
Restore Your Feet While You Transition
Barefoot shoes give your feet room and ground feel. These training tools from The Foot Collective rebuild strength and mobility while your feet adapt: 2 minutes a day.
