Grey Days is the annual celebration with which New Balance pays tribute to one of its most iconic colors, grey, present in the brand since its beginnings. In its 2026 edition, the basketball category joins the celebration with the P400, the catalog refresh that replaces the Fresh Foam BB line in the brand's lineup. This version is positioned as a key piece in the 2026 "Grey Shop" launch.
The P400 opts for layered materials and textures instead of bold color blocks to build its visual identity. In this Grey Day colorway, the shoe features a monochrome slate grey finish, with leather and soft synthetic material on the front of the upper, suede around the ankle and heel, light grey laces, and a stabilizing pattern on the midsole that adds subtle tonal contrast.
At Next Step, you will find these New Balance P400 Grey Day 100% new and authentic, verified before shipping. We offer 14 calendar days for returns and fast shipping throughout Spain and Europe.
Their monochrome grey palette makes them very easy to style: they work equally well with sporty looks in neutral tones and more elaborate streetwear outfits, as grey provides the perfect base for adding color through other garments. Discover more models in the NEW BALANCE collection.
Need more help? Visit our full FAQ or send us a message on WhatsApp Business — 24/7 support with quick responses and personalized service.
The delivery time depends on product availability:
• With immediate shipping: 24-48 hours from warehouse dispatch.
• Pre-order: Approximately 1-10 business days.
All products available on our website and in stores are new and 100% authentic. Our team carefully checks each item before shipping to ensure its authenticity and perfect condition.
You have 14 calendar days from the receipt of the order to request returns or exchanges. You can process it through our website. Refunds are processed once the products arrive at our central warehouses and meet the return conditions.
On each product page, you will find a detailed size guide. If you are unsure, contact our customer service for personalized advice.
Your cart is empty.
Start shopping
