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Why 150,000+ women love us

“I’ve worn my SEFI pieces for years and they’re still like new”

“Makes working out a dream”

“This is by far the most flattering gym kit I own”

“Stylish designs you’ll want to wear for more than just an exercise class”

“I’ve washed and worn mine 50+ times. Still flawless.”

“A flattering silhouette that would fit in just as well at cocktail night with the girls as it does in the gym”

“Workout clothing and co-ord sets to have you looking and feeling your best while you exercise!”

“The leggings felt really secure and sculpted in all the right places. They earned a big tick from moi”

“I’ve owned this pair of leggings for around nine months, and they’ve become a wardrobe staple”

Your everyday activewear, elevated.
Designed for the gym.
Styled for the street.

“Years of struggling to find stylish high performance activewear that made me feel sexy and confident led me to create SEFI. 


SEFI is a mission beyond clothing. In SEFI you are confident, powerful & sexy.


We're at our best when you feel yours.


Let SEFI take you on an adventure." 

FOUNDER, STEF WILLIAMS

No-pilling guarantee
Contour seamlessly to your body
Feels like a second skin
find your perfect fabric
Active
High-energy performance meets sleek versatility.
BUTTERLUXE
Smoother than butter. The ultimate luxury fabric.
waffle
Smoothing sculpting waffle texture like no other. 
timeless
Sculpting & supportive in gym, sleek on the street. “Feel supported but naked.”
define
Ultra soft, smooth cool feel and very comfortable - like wearing a hug. 
silhouette
 A whole new level of style - wearing your silhouette. 
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Free Gift The SEFI Collective Tote

The SEFI Collective Tote

1500 0

★ ★ ★ ★ ★
BEST ACTIVEWEAR BRAND

"I own almost every SEFI collection, the quality is unmatched & the pieces are versatile, you can wear them outside of the gym since they are very comfortable."

Caroline A, Verified Buyer
★ ★ ★ ★ ★
FLAWLESS

If I have to describe SEFI in just one word I would say flawless. The fits and the materials are just perfect!

Jennifer O, Verified Buyer
★ ★ ★ ★
STUNNING

These leggings are so flattering and comfortable at the same time. The quality is absolutely amazing, the design and subtle logo is just perfection!

Dominyka G, Verified Buyer
★ ★ ★ ★ ★
PERFECT FIT AND GREAT QUALITY

Always an amazing fit and wonderful quality - I wear and wash this multiple times a week and it still looks good as new

Clodagh M, Verified Buyer
★ ★ ★ ★ ★
FLATTERING & FEMININE

So flattering and feminine, perfect design as always

Elle B, Verified Buyer
★ ★ ★ ★
STYLISH AND SUPER COMFORTABLE

Great quality and colour, I wear it to the gym or dance classes which makes me feel super confident and comfortable!

Elwira R, Verified Buyer
★ ★ ★ ★ ★
BEST LEGGINGS EVER!!

These leggings top em all for me! These are my absolute favourite… from running errands, pickleball, squatting, running, all of it & they snatch you in all the right places 💗💗💗

Patricia M, Verified Buyer
★ ★ ★ ★ ★
QUALITY IS UNMATCHED

I own two pairs of all three colour ways for these shorts. They are the best activewear shorts on the face of the planet PERIOD. I haven’t touched a pair of lulu lemon or any other brand since owning these for the past 2 years. I’ve washed countless times and they remain in perfect condition it’s honestly magic. Soo supportive but not compressive at all.

Victoria D, Verified Buyer