Best Sellers

Our best selling activewear, chosen by the Seissense community. Every piece is 100% PFAS-free and free from forever chemicals from the fabric up.

  • Filters
    Filter by
    Gender
    Colour
    Fit
    Activity
    Category
    Collections
    Clear all
Woman wearing charcoal zip-up active jacket with high collar and long sleeves Back view of woman wearing charcoal active jacket with high collar and sleek seams

Leon Women's Active Jacket

£85.00
Man wearing charcoal technical half zip athletic top with long sleeves Man wearing charcoal half zip technical athleisure jacket, back view

Cezanne Technical Half Zip

£59.00
Woman wearing sleeveless black rashguard bodysuit, high-waisted, fitted athleisure outfit Woman wearing dark athletic rash guard with pink back zipper detail

Marguerite Rashguard

£65.00
Sand-colored snood with adjustable drawstring on plain background, PFAS-free activewear accessoryLight beige snood with subtle logo, soft stretchy fabric, floating on plain backgroundGranite grey athletic snood scarf with loop, displayed on a light backgroundCharcoal grey snood neck warmer with adjustable drawstring, displayed on light background. Man wearing granite grey athleisure hoodie with snood and matching joggers, hands in pockets

Berthe Snood

£18.00
Man wearing burnt amber technical athleisure shorts with white socks and sneakers Back view of man wearing burnt amber athletic shorts with elastic waistband and side slit

Georges Technical Shorts

£62.00
Woman wearing a burnt amber high-neck one-piece swimsuit with a sleek, minimalist design. Back view of woman wearing burnt amber one-piece swimsuit with zipper closure

Marguerite Tank Mid Rise One Piece Swim

£59.00
Woman wearing a loose light blue maxi dress with black trim, black leggings, and sneakers Woman wearing a loose light blue maxi dress with black trim, black leggings, and sneakers

The Cult Maxi Dress

£122.00
Beige ribbed knit beanie with folded brim on neutral backgroundLight beige knit beanie hat with a folded cuff and subtle label, on a plain backgroundGranite grey ribbed knit beanie with a folded cuff on a light backgroundCharcoal knit beanie with cuff, minimalist style, front label detail, on neutral background Man wearing sand-colored beanie, hoodie, joggers, and sneakers, standing in studio.

Auguste Beanie

£33.00
Man wearing light blue long sleeve UV swim shirt and earth-tone swim shortsO'Keefe Long Sleeve UV Swim Shirt Back view of man wearing long sleeve UV swim shirt and matching shorts in light olive

O'Keefe Long Sleeve UV Swim Shirt

£46.00
Woman modeling beige athleisure sweatpants and sweater set, standing with neutral backgroundWoman wearing light blue athleisure sweater and jogger pants set with white sneakersWoman wearing light beige athleisure sweater and joggers set with sneakers, front viewWoman wearing a granite gray sweater and jogger pants athleisure set, standing indoorsWoman wearing charcoal gray athleisure sweater and joggers standing in studioWoman wearing light olive athleisure sweater and joggers, white sneakers, neutral background Woman wearing light blue athleisure sweater and jogger pants set with white sneakers

Cambresis Sweater

£30.11
  • +2
High-waisted orange swim bottom on model, minimalist style, front view High-waisted orange swim bottom on model with neutral background

Nouveau Swim Bottom

£35.00
Woman wearing an orange swim bra top and high-waisted bikini bottom, neutral background Woman wearing an orange athletic swim bra and bottoms, shown from the back.

Nouveau Swim Bra

£39.00
Woman wearing granite short-sleeve pima cotton hoodie and colorblock leggings Back view of woman wearing a granite short sleeve pima hoodie with mesh panel

Emile Short Sleeve Pima Hoodie

£83.00
Smiling child in cream-colored kids' athleisure sweatshirt and jogger pants Smiling child in cream-colored kids' athleisure sweatsuit with hands in pockets

Marley Sweater

£19.11
Woman wearing wide-leg silver grey pants with lime side stripes and drawstring waistLight blue wide-leg athleisure pants with blue side stripes and drawstring waist Light blue wide-leg athleisure pants with blue side stripes and drawstring waist

Toulouse Pants

£102.11
Beige crew sock with ribbed cuff and subtle geometric detail on neutral backgroundLight beige crew sock with subtle white detail on ankle, shown on neutral backgroundGray crew sock with ribbed cuff and small geometric detail on plain backgroundCharcoal crew sock with ribbed cuff, minimalist design, side view on plain background. Close-up of beige crew sock with ribbed texture and white geometric logo on ankle

Hockney Crew Sock

£13.00
Woman wearing a high-neck, dark gray one-piece athletic swimsuit against a plain background. Woman wearing gray one-piece swimsuit with pink back zipper, viewed from behind

Marguerite Tank One Piece Swim

£59.00
Woman wearing granite gray long sleeve pima hoodie with drawstrings, athleisure style Back view of a woman wearing a granite grey long sleeve athletic hoodie with mesh panel detail.

Emile Long Sleeve Pima Hoodie

£86.00
Kids' cream joggers with tan side stripe, back pocket, and white sneakers Child wearing cream jogger pants with beige side stripe, beige sweatshirt, and white sneakers

Marley Jogger

£27.11
Woman wearing loose silver grey long sleeve shirt and matching pants, back viewWoman wearing loose-fitting light blue nightshirt and shorts set, back view, neutral background Woman wearing loose-fitting light blue nightshirt and shorts set, back view, neutral background

Toulouse Shirt

£108.11
Granite grey athletic jogger pants with cuffed ankles and side pockets, worn with sneakersBeige jogger sweatpants with side pockets and cuffed ankles, styled with white sneakersWoman wearing charcoal jogger pants with elastic waist, drawstring, and side pockets Beige jogger sweatpants with side pockets and cuffed ankles, styled with white sneakers

Cambresis Tracksuit Jogger

£65.00
Cult Midi Dress Woman wearing a loose driftwood charcoal midi dress with black trim and side pockets

Cult Midi Dress

£87.00
Men's driftwood grey jogger sweatpants with seam detailing and cuffed anklesMen's granite jogger pants with cuffed ankles and side pockets, worn with black sneakersCharcoal men's jogger sweatpants with pockets, elastic cuffs, and white sneakers Man wearing granite grey men's tracksuit jogger set with hoodie, black sneakers, studio background

Cambresis Men's Tracksuit Jogger

£65.00
Man wearing a light grey athleisure tracksuit hoodie with drawstrings and kangaroo pocketMan wearing charcoal men's tracksuit hoodie with front pocket and drawstring hoodMan wearing granite grey men's tracksuit hoodie and joggers, athletic fit, against neutral background Man wearing charcoal grey men's tracksuit hoodie and joggers, athleisure style

Cambresis Men's Tracksuit Hoodie

£70.00
Woman wearing charcoal grey tracksuit hoodie and matching joggers, front viewWoman wearing granite gray athleisure tracksuit hoodie with front pocketsWoman wearing light grey athleisure hoodie with drawstrings and kangaroo pocket. Woman wearing charcoal grey tracksuit hoodie and matching joggers, front view

Cambresis Tracksuit Hoodie

£68.00
Woman wearing a green short sleeve midi dress with white sneakers, standing against neutral background Woman wearing a green short-sleeve midi dress and white sneakers, standing in studio

Sloane Pima Midi Dress

£42.11
Woman in long, loose kaftan with blue and purple floral print on light background Woman wearing a loose floral kaftan dress with blue and purple abstract flower print

Sanzio Kaftan Abstract Ivy Print

£114.11
Striped knit beanie hat in neutral tones, folded brim, minimalist style Close-up of striped knit beanie in beige, grey, black, and white on light background.

Auguste Striped Beanie

£33.00
Crew sock with blue, beige, black, and olive horizontal stripes on a plain background Close-up of a striped crew sock in beige, black, blue, and taupe tones on neutral background

Hockney Striped Crew Sock

£13.00
Woman wearing a long-sleeve floral maxi dress with purple and green botanical print Woman wearing a long-sleeve white maxi dress with purple floral print, standing sideways

Ivy Maxi Dress

£117.11
Woman wearing blue short sleeve one piece bodysuit, minimal studio background Woman wearing blue cap sleeve one-piece activewear and green cap, sitting on floor

Gerda Cap Sleeve One Piece

£35.11
Back view of beige athleisure shorts with side pockets, worn with matching slip-on sandalsWoman wearing blue athletic shorts with side pocket and curved hem, barefoot on neutral background Woman wearing blue athletic shorts with side pocket and curved hem, barefoot on neutral background

Raphael Short

£43.11
Woman modeling beige sleeveless vest and shorts athleisure set, back viewWoman wearing blue sleeveless athleisure vest and shorts, shown from the back Woman wearing a sleeveless blue zip-up athleisure vest and matching shorts

Raphael Vest

£36.11
Woman wearing a long floral kaftan with purple and green print, yellow trim, standing barefoot Woman wearing a long floral kaftan with purple flowers and yellow trim, side view

Sanzio Kaftan Ivy Print

£114.11
Minimalist white card with embossed Seissense logo on neutral background Hand holding smartphone displaying digital gift card message on neutral background

Seissense Gift Card

£46.12 £496.12
High-waisted lime green swim bottom on model, front view, minimalist studio background Woman wearing light green high-waisted swim bottom and matching crop top, studio background

Wegener Swim Bottom

£13.11