The NIKE REACTX INFINITY RN 4 GTX Purple FB2197500 represents the forefront of Nike cushioning innovation and boundary-pushing sneaker design. Engineered with maximum impact absorption, lightweight responsive cushioning, and premium breathable materials, this silhouette delivers unmatched athletic performance and iconic street credibility.
Key Design & Performance Highlights:
Engineered Breathable Upper: Constructed with premium mesh, woven textiles, and precision overlays for targeted airflow, structured lockdown, and lightweight wear.
Pioneering Cushioning Technology: Advanced Nike Air / Shox / ReactX cushioning systems engineered to provide maximum impact protection and springy energy return with every step.
Ergonomic Heel & Ankle Collar: Padded contour collar and sculpted heel counter offer plush step-in comfort and reduce friction during long wear.
Durable Multi-Surface Outsole: High-abrasion solid rubber outsole with waffle / flex groove traction pattern for reliable grip and natural foot flexibility.
Signature Details: Distinctive branding accents, TPU structural overlays, and authentic color blocking.
Authentic Sizing & Conversion Chart:
Women's US
Men's US
EUR Size
CM / Foot Length
US 5.5W
US 4.0M
EU 36.0
22.5 cm
US 6.0W
US 4.5M
EU 36.5
23.0 cm
US 6.5W
US 5.0M
EU 37.5
23.5 cm
US 7.0W
US 5.5M
EU 38.0
24.0 cm
US 7.5W
US 6.0M
EU 38.5
24.0 cm
US 8.0W
US 6.5M
EU 39.0
24.5 cm
US 8.5W
US 7.0M
EU 40.0
25.0 cm
US 9.0W
US 7.5M
EU 40.5
25.5 cm
US 9.5W
US 8.0M
EU 41.0
26.0 cm
US 10.0W
US 8.5M
EU 42.0
26.5 cm
US 10.5W
US 9.0M
EU 42.5
27.0 cm
US 11.0W
US 9.5M
EU 43.0
27.5 cm
US 11.5W
US 10.0M
EU 44.0
28.0 cm
US 12.0W
US 10.5M
EU 44.5
28.5 cm
US 12.5W
US 11.0M
EU 45.0
29.0 cm
US 13.0W
US 11.5M
EU 45.5
29.5 cm
US 13.5W
US 12.0M
EU 46.0
30.0 cm
Fit Recommendation: Nike Air Max models generally fit true to size. For runners with wider feet or models with snug TPU cages, taking a half size up is recommended for optimal comfort.
