The ASICS Metaspeed Sky Tokyo running shoe in red, size 39, offers a specialized shoe option for runners focused on performance-oriented design. This model integrates ASICS' advanced running technology with an emphasis on propulsion and energy return, suitable for competitions or high-intensity training sessions. The upper is made of technical mesh fabric that provides breathability while offering structural support, strategically reinforced in high-stress areas for increased durability. The midsole combines ASICS FlyteFoam technology with a carbon plate to optimize energy flow and reduce fatigue during forward motion. The outsole utilizes ASICS High Abrasion Rubber in contact zones for reliable traction on various surfaces while keeping the weight low. The design includes a heel cap and collar padding for a secure fit and comfort, with a lace-up closure for personalized tension adjustment. The Metaspeed Sky model features a specific geometry for a smooth transition from heel strike to toe-off, potentially beneficial for certain running styles. The red colorway offers good visibility outdoors. The weight is approximately 220 grams per shoe in size 39, with dimensions varying by size. This running shoe is designed for road, track, and firm surfaces, and is not recommended for trail running or off-road use. Care instructions: clean with a damp cloth and air dry away from heat sources. This product represents the successor to previous ASICS performance running shoes, with refinements based on athlete feedback and biomechanical research.