GERARD MEN'S CREWNECK TEE – Seissense

Explore our lineup. Thoughtfully designed.

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Rare finds, Designed Once

Purposeful Performance

Engineered for Movement

Impact-Driven Innovation

Discover the Seissense Impact

Custom Prints

Artisanal Design by Seissense

Utility Inspired

Comfort Meets Performance

Marine Collagen

Inspired by Nature's Depths

Artful Pieces. Purposefully Made.

Limited Edition

Collagen Infused Yarn

Explore Performance with Purpose

Purposeful Performance

Engineered for Movement

Impact-Driven Innovation

Discover the Seissense Impact

Join our Seissense Tribe

Journeys of Change

Real Journeys, Real Impact

Events & Workshops

Unlock Growth Through Community

Blogs & Resources

Inspire Thoughts, Spark Action

Camping

Hiking

Yoga

MOVE WITH EASE. SEAMLESS STYLE. EFFORTLESS COMFORT. MOVE WITH EASE. SEAMLESS STYLE. EFFORTLESS COMFORT.

High quality
Sustainability
Craftsmanship

At Seissense, quality is never an afterthought - it’s the foundation.
Each piece is designed to hold its form and function, no matter the pace of your day.
We choose premium fabrics that move with you and endure wear after wear. The result? Elevated active essentials that feel as fine as they look.
Because what you wear daily should feel exceptionally effortless and style should never come at the cost of comfort or performance.

We believe in doing better - for you and for the world. Our commitment to sustainability begins with mindful sourcing of low-impact material.
We design with intention, reducing waste without compromising on form or function.
Built to last, made to matter - all our garments invite a more conscious way to wear better and smarter.
From fabric to finish, every step we take is responsible and purposeful. Because moving forward means treading lighter, and choosing better.

All our fits are thoughtfully created - where design meets precision.
Every seam, cut, and contour is a result of meticulous attention to detail. Using modern craftsmanship, tools, and techniques, we create fluid, functional designs.
Our creations don’t just look good, they deliver in fit and feel

The Seissense Tribe

REN MEN'S CLASSIC REFLECTIVE LEGGING

£149.00

CAMBRESIS TRACKSUIT HOODIE

£94.00

LEON BOOTCUT GYM PANTS

£104.00

WANDERER RACER BACK DRESS

£109.00

SEGBEMA MEN'S PERFORMANCE JACKET WINDBREAKER

£299.00

CLASSIC TUCUMAN BEACH BAG

£119.00

bag

It’s rewarding to stay active

We mean it in every way. Earn points and claim rewards with every purchase.

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Your Active Guide

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Our Fit Philosophy

Activewear that doesn’t just fit, it fits you right.

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Designed to last

Designed for comfort, engineered for durability, and made to move with you.

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Your Skin’s New Favourite

Clothing should be more than a layer.

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Pack Light. Move Better.

Smarter Packing: The Pieces That Do Double Duty

About Seissense

Explore Performance with Purpose

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Seissense x Icon

Matching Sets

The Conscious Collection

Size Guide

Size chart

Size Guide

Our bra sizes currently run one size larger than standard sizing. We recommend sizing up for a more comfortable fit.

Use our size chart calculator for precise measurements.

Your usual bra size:

Your recommended size: S

Ensure you find your accurate fit for maximum comfort.
Feel confident and comfortable in your perfect bra size.