ASICS Men's Gel-Resolution 9 Tennis Shoes - High-Performance Court Shoes for Competitive Play | Durable & Comfortable for Hard Court, Clay & Grass Surfaces

PGUARD technology: Helps increase durability in the outsole's toe and heel area DYNAWRAP technology: Improves stability DYNAFIT upper: Improves flexibility AHARPLUS outsole rubber: Improves durability Rearfoot and forefoot GEL technology: Improves impact absorption and creates a softer feeling at footstrike

PGUARD technology Helps increase durability in the outsole's toe and heel area

DYNAWRAP technology Improves stability

DYNAFIT upper Improves flexibility

AHARPLUS outsole rubber Improves durability

Rearfoot and forefoot GEL technology Improves impact absorption and creates a softer feeling at footstrike