UltraBoost 21 UB21 – FY0366

Short Description
Redefine your run with next-level energy. The UltraBoost 21 UB21 FY0366 blends advanced BOOST cushioning with a modern Primeknit+ design to deliver power, precision, and comfort in every stride. ⚡👟

Key Features
👟 Silhouette: UltraBoost 21 (Unisex / Running Shoe)
🧵 Primeknit+ upper ensures adaptive support, lightweight feel, and breathability
💨 BOOST midsole delivers maximum energy return and plush comfort
🦶 Stretchweb outsole with Continental™ rubber provides superior grip and flexibility
🎯 Linear Energy Push system enhances responsiveness and stability
🌿 Made partly with recycled materials — designed for sustainable performance

Specifications
🆔 Style code: FY0366
🎨 Color: Cloud White / Core Black / Solar Yellow
⬆️ Low-top performance silhouette
📦 Packaged in official Adidas Originals box

Size & Fit
📏 Fits true to size for most runners
🧠 For a roomier fit, consider going up half a size

Care
🧼 Clean gently with mild soap and soft brush or cloth
🌬️ Air dry naturally — avoid heat or direct sunlight