Performance Vest BLN Marathon Edition
Perforated running vest – lightweight, quick-drying and perfect for maximum freedom of movement while running and training.
This limited collection is a tribute to the iconic Berlin Marathon and the inspiring running culture that brings it to life every year.
Free Goodie
Free Performance Cap
from €150 order value
Free Crew Beanie
from €200 order value
Complete your look
Product Information
Designed for maximum performance during runs and workouts, our perforated performance vest is crafted from premium stretch fabric. Engineered for optimal freedom of movement, it features a lightweight, quick-drying construction.
The loose fit and printed label at the back ensure maximum comfort and prevent irritation.
Material and Care
Material
90% POLYESTER
10% SPANDEX
Care instructions
Machine wash cold
Wash with like colors
Do not use softeners
Do not bleach
Do not dry clean
Do not iron
Do not tumble dry
Free Goodie
Free Performance Cap
from €150 order value
Free Crew Beanie
from €200 order value
Complete your look
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.