Stay supported and in control with ASICS GELChallenger 15 tennis shoes in WhiteGunmetal. Equipped with a restyled outsole for even more grip and stability, the GELChallenger 15 lets you up the tempo and remain fully in charge of your movement.Its guiding grooves and ergonomic shape help you shift your weight comfortably and efficiently, combining with the muchloved WINGWALL system to help you maintain balance when stepping in to shots, sliding, and changing direction.On the upper, theres a thicker collar for a snugger feel around the ankle, while a redesigned lacing setup keeps the fit locked in. PGUARD toe protector improves durability OrthoLite sockliner provides soft stepin comfort WINGWALL technology improves stability AHARPLUS outsole improves durability Rearfoot GEL technology improves impact absorption and creates a softer feeling at footstrike The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33 and carbon emissions by approximately 45 compared to the conventional dyeing technology