Callaway Footwear Men's Del Mar Ballistic-M 100% Durable Ballistic Mesh Upper Imported Rubber sole Del mar ballistic features a california casual lifestyle-inspired upper Durable ballistic mesh upper construction to make it even lighter and cooler for those hot days out on the course Longitudinal and latitudinal flex grooves respond to force by flexing in the right direction to enable you to maintain alignment, stability and traction Spikeless design incorporates same xfer power wall technology as spiked shoes to keep you low and stable Molded comfort inserts are lightweight, comfortable and provide antimicrobial protection