Shipping:
We work with top-tier shipping partners to ensure fast and secure delivery.

Shipping costs are calculated at checkout.

Returns:
You can return your items within 14 days of receiving your order.

Material
100% COTTON

Care instructions
Machine wash cold
Wash inside out
Wash with like colors
Do not use softeners
Do not bleach
Do not tumble dry
Iron low heat
Do not dry clean

Shipping:
We work with top-tier shipping partners worldwide to ensure fast and secure delivery.

Shipping costs are calculated at checkout.

– Shipping to Germany is free for orders over €150.

– Shipping to Austria and Switzerland is free for orders over €200.

– Shipping to other European countries is free for orders over €300.

– Shipping to non-European countries is free for orders over €350.

Returns:
You can return your items within 14 days of receiving your order.

Return shipping costs €4.99 and will be deducted from your refund.

Returns can easily be registered through our returns and tracking portal:

https://day-1.com/pages/tracking

Complete your look

Legacy SweatpantsColor:Brown/GreyChoose size

€74,90

HinzufügenLegacy HoodieSale price€79,90Add to cart

day one is not just a brand — it’s a mindset.

Built on belief and obsession, we design high-performance apparel for those who live by the same code — those who choose to show up, no matter what.

Every piece is forged in the real world: tested under the harshest conditions — from ultramarathons to relentless hours in the gym.

Our design language is clean, minimal, and functional — with every cut, seam, and fabric choice serving a purpose. No distractions. No unnecessary details. Just timeless silhouettes engineered to move with you, feel premium on skin, and perform under pressure.

We use only the highest-grade materials, selected for durability, comfort, and precision fit. From the stitching to the packaging, every detail is refined to meet the highest standards.

Built for Performance

Premium Quality Fabrics.Engineered for Movement & Endurance.Battle-Tested by Professional Athletes.Timeless design. Maximum purpose.

Discipline. Vision. Obsession.

May our day one performance attire serve as a call — to embrace every challenge you face, and to push your boundaries to a new level.

We, as founders, live and breathe what day one stands for. To show what the human body and mind are capable of, Arda took on the hardest challenge of his life: running a 3,000 km ultramarathon from Berlin to New York. And now — he’s doing it again. Running another 3,000 km through Japan. 1.5 to 2 marathons every single day.

Why? To embrace new limits. To show what’s possible. And to battle test the collection we’re sharing with you.

We didn’t just design this collection. We forged it. Kilometer by kilometer. Gym session by gym session. Every single piece has been pushed to the edge — under the most brutal conditions imaginable.

So when it lands on your doorstep — when you unpack it, wear it, move in it —you know it’s real.

Complete your look

Legacy SweatpantsSale price€74,90Crew T-ShirtSale price€44,90365 SocksSale price€14,90

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day one®

Every day is day one®. You are not bound by what you were yesterday; every morning, you get to decide who you are. So, what will it be today, 'one day' or day one®?

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