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Collection: Products

Adjustable sports bra

Adjustable sports bra

Regular price ¥8,423 JPY

Regular price ~~¥5,615 JPY~~ Sale price ¥8,423 JPY
Unit price per
Adjustable sports bra high support

Adjustable sports bra high support

Regular price ¥8,423 JPY

Regular price Sale price ¥8,423 JPY
Unit price per
Anti-slip grip socks for yoga or pilates

Anti-slip grip socks for yoga or pilates

1 total reviews

Regular price ¥2,805 JPY

Regular price Sale price ¥2,805 JPY
Unit price per
Bali jumpsuit yoga and pilates

Sale

Bali jumpsuit yoga and pilates

Regular price ¥13,606 JPY

Regular price ~~¥19,221 JPY~~ Sale price ¥13,606 JPY
Unit price per

Sale
Beige leggings second skin

Beige leggings second skin

Regular price ¥12,094 JPY

Regular price Sale price ¥12,094 JPY
Unit price per
Black elegant jumpsuit

Sold out

Black elegant jumpsuit

3 total reviews

Regular price ¥11,231 JPY

Regular price ~~¥19,221 JPY~~ Sale price ¥11,231 JPY
Unit price per

Sold out
Black leopard sports bra

Black leopard sports bra

3 total reviews

Regular price ¥8,423 JPY

Regular price Sale price ¥8,423 JPY
Unit price per
Butterfly set pocket leggings

Butterfly set pocket leggings

4 total reviews

Regular price ¥18,574 JPY

Regular price Sale price ¥18,574 JPY
Unit price per
Butterfly sports bra

Sale

Butterfly sports bra

Regular price ¥6,263 JPY

Regular price ~~¥8,855 JPY~~ Sale price ¥6,263 JPY
Unit price per

Sale
Camel leggings and sports bra

Camel leggings and sports bra

Regular price ¥17,926 JPY

Regular price Sale price ¥17,926 JPY
Unit price per
Chocolate truffle pilates set

Chocolate truffle pilates set

1 total reviews

Regular price ¥18,358 JPY

Regular price Sale price ¥18,358 JPY
Unit price per
Cloud crop top

Cloud crop top

Regular price ¥8,423 JPY

Regular price Sale price ¥8,423 JPY
Unit price per
Crop top navy blue

Crop top navy blue

1 total reviews

Regular price ¥7,343 JPY

Regular price Sale price ¥7,343 JPY
Unit price per
Cross back sports bra

Cross back sports bra

Regular price ¥8,423 JPY

Regular price Sale price ¥8,423 JPY
Unit price per
Define Jumpsuit

Sold out

Define Jumpsuit

1 total reviews

Regular price ¥7,991 JPY

Regular price ~~¥17,494 JPY~~ Sale price ¥7,991 JPY
Unit price per

Sold out
Elegant crop top

Elegant crop top

Regular price ¥8,207 JPY

Regular price Sale price ¥8,207 JPY
Unit price per

Zero feel set

Elevate Your Style with Fresh Arrivals from Our Just Landed Collection!

Example product title

¥20 JPY

¥20 JPY

Clearance Sale

End of season clearance SALE Please note products are not refundable but...

Clearance Sale

Let customers speak for us

from 286 reviews

The perfect Pilates socks

A great fit and so comfortable.
Stay in place during a class.
Highly recommend.

Tricia Myatt

12/09/2025

Pilates and yoga grip socks shorter

Pilates and yoga grip socks shorter

Gorgeous soft pink

Obsessed with this sports bra love all colours but soft pink is like eating marshmallows.

Angela B

11/21/2025

Flowline sports bra

Flowline sports bra

Burgundy set

So pleased with this set. The perfect colour for autumn/winter. Beautiful burgundy colour. Can't wait to wear it.

Channelle Myers

11/10/2025

Pilates leggings set super soft

Pilates leggings set super soft

Leggings

First purchase from Belsize of leggings for Pilates. Great fit and so pleased with quality. Will definitely purchase again and recommend.

Lynne Smith

10/27/2025

Scalloped leggings

Scalloped leggings

So beautiful to move in

I love this jumpsuit so much. It feels like a second skin when on. The colour is beautiful, too. I especially loved the scallop-crossed back. It's a definite must-buy in any colour.

Channelle Myers

10/17/2025

Scalloped jumpsuit

Scalloped jumpsuit

Beautiful unique set

Don’t hesitate to buy. Beautiful sets. Sculpt the body nicely. Love them.

Channelle Myers

09/19/2025

Scallop cross back matching set

Scallop cross back matching set

As a yoga teacher, I wash my activewear every single day. This is the only bra that hasn’t lost its color or shape absolutely amazing

Courtney

09/17/2025

White sports bra

White sports bra

Great support

Top of excellent quality leggings are like second skin

A****ra

09/17/2025

Pilates leggings set super soft

Pilates leggings set super soft

Second skin

Like a second skin probably the most comfortable leggings

Ana

09/17/2025

Pilates leggings set super soft

Pilates leggings set super soft

Stunning

Beautiful colour perfect fit. I wish I knew earlier for Belsize. Best price

Jordan

09/17/2025

Flared leggings and sports bra set

Flared leggings and sports bra set

My second colour

Bought fist set in brown colour it hold my tummy extremely well, absolutely love coral 🪸 colour. Temptation for the black set 👀

Jady

09/17/2025

Butterfly set pocket leggings

Butterfly set pocket leggings

The best gym set

I first bought only pocket leggings after wearing them daily they are still the same. I have treated my self with full set. Very good quality

Tamara

09/17/2025

Pocket leggings & sports bra

Pocket leggings & sports bra

Absolutely amazing

Love the fabric but finally pockets that hold my phone. Very comfortable. I wish they have in more colours.

Tamara

09/17/2025

Pocket leggings

Pocket leggings

Unbelievable love it

After giving birth, I honestly thought I’d never feel confident in leggings again but this Scallop Set holds my mummy tummy in beautifully! 💖 The quality is amazing, and the sports bra gives strong support even though it’s a one shoulder design. I’ve already ordered another colour before it sells out again!

Stacey

09/09/2025

Scallop pilates set

Scallop pilates set

Wearing it every day, everywhere! Obsessed

I paired it with the pink padded top and honestly felt like a total tennis babe! The fit is super flattering, not too short, and moves perfectly on the court. The fabric is soft but supportive, I’ve worn it for both tennis and running it’s that cute. Definitely a must-have set! 🎾💗 We’ll done Belsize

Harper.S

06/08/2025

Women’s Padel and Tennis Skirts – Stylish Skorts for Tennis & Picklebal

Women’s Padel and Tennis Skirts – Stylish Skorts for Tennis & Picklebal