These are in almost new condition!! Only worn once bought the wrong size by accident. Make an offer! Running requires protecting both the feet and the knees, and the Brooks® Ariel '20 running features an enhanced construction with the maximum cushioning for much-needed support and GuideRails technology that keeps excess movement at bay. SKU: #9305384 Predecessor: Ariel '18. Support Type: Overpronation/Stability. Cushioning: Maximum cushioning. Surface: Road. Differential: 12 mm. Engineered mesh upper with an embroidered saddle and eyestay for a more modern look. Lace-up closure. External heel counter helps stabilize the foot. Plush tongue and collar. Breathable mesh lining wicks away moisture and offers a great in-shoe feel.