UltraBoost 21 UB21 – S23870

Short Description
Unleash your running power with the UltraBoost 21 UB21 S23870 — a perfect fusion of comfort, technology, and modern style. Designed with an advanced Primeknit+ upper and the revolutionary BOOST midsole, it delivers unmatched energy return and long-lasting performance on every run. ⚡👟

Key Features
👟 Silhouette: UltraBoost 21 (Unisex / Running Shoe)
🧵 Primeknit+ upper provides adaptive fit, flexibility, and superior breathability
💨 BOOST midsole ensures exceptional cushioning and high energy rebound
🦶 Stretchweb outsole with Continental™ rubber offers outstanding traction and durability
🎯 Linear Energy Push system enhances forward momentum and stability
🌿 Crafted with recycled materials — supporting sustainability with performance

Specifications
🆔 Style code: S23870
🎨 Color: Core Black / Grey Six / Solar Yellow
⬆️ Low-top performance running silhouette
📦 Packaged in official Adidas Originals box

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

Care
🧼 Clean gently using mild soap and a soft cloth or brush
🌬️ Air dry away from direct sunlight and heat sources