Performance Socks
Lightweight, breathable, and supersoft running socks for runners pushing their limits.
Free Goodie
Free Performance Cap
from €150 order value
Free Crew Beanie
from €200 order value
Complete your look
Product Information
Designed for runners pushing their limits, our performance socks offer a lightweight, breathable, and supersoft feel to keep you dry and cool. With extra support around the ankle and soft cushioning in the footbed, these socks provide comfort and stability with every step, helping you achieve optimal performance.
Material and Care
Material
55% NYLON
35% POLYESTER
10% SPANDEX
Care instructions
Machine wash cold
Wash inside out
Wash with like colors
Do not bleach
Do not use softeners
Do not tumble dry
Do not dry clean
Do not iron
Free Goodie
Free Performance Cap
from €150 order value
Free Crew Beanie
from €200 order value
Discover more
day one is a mindset.
Built on conviction and obsession, we create performance wear for those who show up every day, no matter what.
Every piece is tested in real-world conditions, from 3,000 km ultraruns to endless hours in the gym.
Our design is clean, minimalist and functional. Every cut, every seam and every material serves a purpose. No distractions, just timeless silhouettes that move with you.
We use only premium materials for exceptional durability, comfort and a precise fit, with attention to every detail, from stitching to packaging.
Discipline. Vision. Obsession.
May our day one performance wear inspire you to embrace every challenge and redefine your limits.
As founders, we live what day one stands for. Arda ran 3,000 kilometres from Berlin to New York, followed by another 3,000 kilometres across Japan, running 1.5 to 2 marathons every day. This year, he took on Death Valley: 604 kilometres in 123 hours, through desert and heat.
Our pieces weren’t simply designed. They were forged. Kilometre by kilometre, workout by workout, under the most extreme conditions.
When you wear them, you feel what day one stands for.