Go fast. Go hard. Run light in the ASICS GEL-NoosaFAST! ; A triathlon-specific racing flat. Breathable mesh upper. Lightweight synthetic overlays. Elastic laces for easy on-the-go adjustment. No-sew construction allows for sockless wear. Lightly padded tongue and collar for added comfort. Breathable fabric lining offers a great against-the-skin feel. Lightweight foam insole supplies light underfoot cushioning. Rearfoot Gel cushioning system attenuates impacting shock and allows for a smooth transition to midstance. Guidance Line technology employs a vertical flex groove that decouples the tooling along the line of progression for maximum stride efficiency. Magic Sole is ventilated to minimize weight while maximizing breathability. AHAR (ASICS High Abrasion Rubber) is known for its supreme durability and is strategically placed throughout high-wear areas of the outsole. DuraSponge forefoot outsole material is comprised of a blown AHAR rubber for superior cushioning and long-lasting wear. Built on a racing-specific last. Imported. Measurements: ; Weight: 6 oz ; Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary by size.