FABRICS GUIDE
“I’ve washed and worn mine 50+ times. Still flawless.”
“I’ve worn my SEFI pieces for years and they’re still like new.” SEFI premium fabrics are carefully selected for high performance with sophisticated style that ensures durability and elegance offering a luxurious approach to activewear.
SEFI fabrics keep you feeling confident & comfortable, effortlessly transitioning you from workout to casual stylish outings.
Every component of our products, from the fabric to the thread and accessories, has been rigorously tested against a list of up to 350 toxic chemicals. PFAS free, non toxic.
Our fabrics undergo many strict tests including:
Anti-pilling based on 2500 rpm abrasion. 4 way stretch. Colour fastness for washing, sweat & rubbing.
Quality control tests over all aspects of production.
active
BUTTERLUXE
timeless
waffle
define
silhouette
effortless
ESSENTIALS
Timeless
Sculpting & supportive in gym, sleek on the street. “Feel supported but naked.”
The Details
- Seamless, sculpting & smoothing with subtle contouring detail to enhance your natural shape.
- Soft, antibacterial, breathable & quick drying.
- Wear & wash for years like new.
- 4 way stretch, never loses shape & squat proof.
- Mix of Polyamide & Spandex.
- Backed by no-pilling guarantee.
WHat am I best FOR?
Meet your go-to for everything from pilates class, gym, spin class to brunch and all the moments between.
size & fit
- True to size.
- Medium weight & compression.
Timeless
Sculpting & supportive in gym, sleek on the street. “Feel supported but naked.”
BUNDLE & SAVE
sculpting & supportive
Quick Add
XS
S
M
L
XL
£46.00
BUNDLE & SAVE
squat proof
Quick Add
XS
S
M
L
XL
£72.00
BUNDLE & SAVE
sculpting & supportive
Quick Add
XS
S
M
L
XL
£46.00
BUNDLE & SAVE
squat proof
Quick Add
XS
S
M
L
XL
£72.00
BUTTERLUXE
Smoother than butter, the ultimate luxury fabric
The Details
- Seamless & smoothing with subtle contouring details to enhance your shape.
- Smoother than butter material that feels like a second skin.
- 4-way stretch, never loses shape.
- Wear & wash for years like new.
- Antibacterial, breathable & quick drying.
- Lightweight & light compression.
- Backed by a no-pilling guarantee.
- Mix of polyamide & spandex.
WHat am I best FOR?
Your go-to fabric for low impact workouts from pilates to yoga, barre to brunch and all the moments between.
size & fit
- True to size, size up if between sizes.
- Lightweight & light compression.
BUTTERLUXE
Smoother than butter, the ultimate luxury fabric
sculpting ruched waist
Quick Add
XS
S
M
L
XL
£72.00
sculpting ruched waist
Quick Add
XS
S
M
L
XL
£72.00
no-pilling guarantee
Quick Add
XS
S
M
L
XL
£72.00
no-pilling guarantee
Quick Add
XS
S
M
L
XL
£72.00
sculpting ruched waist
Quick Add
XS
S
M
L
XL
£72.00
sculpting ruched waist
Quick Add
XS
S
M
L
XL
£72.00
Waffle
Smoothing sculpting waffle texture like no other.
The Details
- Seamless, sculpting & smoothing with unique waffle details.
- Super-soft, antibacterial, breathable & quick drying.
- Wear & wash for years like new.
- 4 way stretch, never loses shape & squat proof.
- Mix of Polyamide & Spandex.
- Backed by no-pilling guarantee.
WHat am I best FOR?
Turning heads and stylish workouts or running errands.
size & fit
- True to size.
- Medium weight & compression.
Waffle
Smoothing sculpting waffle texture like no other.
BUNDLE & SAVE
unique style
Quick Add
XS
S
M
L
XL
£46.00
ACtive
High-energy performance meets sleek versatility.
The Details
- Cut & sew, smooth, durable, body contouring fabric that hugs curves for a sculpted look.
- 4-way stretch, never loses shape & squat proof.
- Wear & wash for years like new.
- Antibacterial, breathable, sweat-wicking & quick drying.
- Ultra-soft, second skin feel. Made to keep up with your most active days.
- Anti-pilling, high performance colour fastness resistance.
- Mix of Nylon & Spandex.
WHat am I best FOR?
Perfect for high-energy workouts like spin, HIIT, weight training. Designed to take you from intense gym sessions to on-the-go errands with effortless style.
size & fit
- True to size.
- Medium weight & medium compression.
ACtive
High-energy performance meets sleek versatility.
BUNDLE & SAVE
NEW
new sculpting high waist
Quick Add
XS
S
M
L
XL
£52.00
BUNDLE & SAVE
NEW
new sculpting high waist
Quick Add
XS
S
M
L
XL
£52.00
BUNDLE & SAVE
NEW
new sculpting high waist
Quick Add
XS
S
M
L
XL
£52.00
define
Ultra soft, smooth cool feel and very comfortable - like wearing a hug.
The Details
- Cut & sew, stretchy body contouring fabric that hugs curves for a sleek and sculpted look.
- Smoother than butter material that feels like a second skin.
- Wear & wash for years like new.
- 4 way stretch, never loses shape & squat proof.
- Mix of Nylon & Spandex.
- Backed by no-pilling guarantee.
WHat am I best FOR?
Sleek with a cool touch, this fabric is best for medium to high impact workouts, weight training, spin, HIIT, & so much more.
size & fit
- True to size.
- Light to Medium weight & compression.
define
Ultra soft, smooth cool feel and very comfortable - like wearing a hug.
FINAL SALE £20
bum enhancing
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
buttery-soft
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
buttery-soft
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
buttery-soft
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
sculpting v-waist
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
bum enhancing
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
Silhouette
A whole new level of style - wearing your silhouette.
The Details
- Cut & sew, stretchy, body contouring fabric that hugs curves for a sleek and sculpted look.
- Smoother than butter material that feels like a second skin
- Wear & wash for years like new.
- Antibacterial, breathable & quick drying.
- Mix of Nylon & Spandex.
- Backed by no-pilling guarantee.
WHat am I best FOR?
Compliments. This fabric is best for medium to high impact workouts, weight training, spin, HIIT, & so much more.
size & fit
- True to size.
- Lightweight with medium compression.
Silhouette
A whole new level of style - wearing your silhouette.
FINAL SALE £20
style & comfort
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
style & comfort
Quick Add
XS
S
M
L
XL
£20.00
£42.00
FINAL SALE £20
style & comfort
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
style & comfort
Quick Add
XXS
XS
S
M
L
XL
£20.00
£46.00
FINAL SALE £20
silhouette detail
Quick Add
XXS
XS
S
M
L
XL
£20.00
£62.00
FINAL SALE £20
body smoothing
Quick Add
XXS
XS
S
M
L
XL
£20.00
£62.00
Effortless
Luxurious barely there lingerie.
The Details
- Molds seamlessly to your curves. Invisible under clothing.
- The ultimate combination of comfort & style, it's the perfect versatile base layer.
- Super-soft & lightweight, antibacterial, breathable & quick drying.
- Mix of Polyamide & Spandex.
- Backed by no-pilling guarantee.
WHat am I best FOR?
Feel ultra confident & sexy. Moving effortlessly with you during workouts, lounging and everyday life.
size & fit
- True to size.
Effortless
Luxurious barely there lingerie.
Essentials
All day comfort and style.
The Details
- Super-soft signature fabric made for the ultimate comfort.
- Mix of Modal & Cotton.
WHat am I best FOR?
From lounging in the mornings to unwinding in the evening, this fabric keeps you cosy in style.
size & fit
- True to size.
Essentials
All day comfort and style.
FINAL SALE £20
cosy in style
Quick Add
XS
S
M
L
XL
£20.00
£54.00
FINAL SALE £20
all-day style
Quick Add
XS
S
M
L
XL
£20.00
£42.00
