SEV7N is the future generation of legging and is named in homage to the first Billi London boutique in Seven Dials, London.
Made with a blend of innovative enhanced biodegradable yarns, using 3D technology for maximum durability and superior comfort, they will quickly become your new favourites. Wear them seven days a week – at home, going out, to chill, to dress up, to run or for yoga.
We deliver in the UK and in Europe and we aim to ship your order within 48 hours.
Standard Delivery: 3-5 days (£3.5 for the UK, 4.9€ for France, and 6.5€ for most of Europe).
Express Delivery: 1-2 days (£6.50 for the UK and 10€ for France).
Free delivery in Europe over 69€.
More info on our Delivery & Return terms here.
- Premium and luxury yarn: 90% Amni Soul Eco® nylon and 10% ROICA ™ V550 elastane
- Appearance 150 denier
- Seamless at the crotch
- Curves toning and sculpting effect to beautify your natural silhouette
- A soft seamless waistband sewn by hands with natural tummy flattening effect
- 3D technology allowing a 360-degree flexibility
- Comfortable and soft for a second skin effects
- A stamp at the back to differentiate the front and back
We have developed an advanced technical size chart, so you will know exactly which size to select for your biodegradable leggings.
What if I am in-between two sizes? Do not panic, you will find the perfect one for you too! View our size guide here to find your size.
Good for you, and the planet:
Billi London leggings biodegrade in a record time of around 5 years*, they breakdown into biomass and biogas, creates renewable energies, and do not leave microplastics in landfills.
They are ethically and sustainably made in Italy with solar-powered production & water recycling facilities.
*In landfills. Reference system: ASTM D5511 - Std test.
Leggings Care Routine:
Machine wash at 30 degrees maximum.