The Gazelle, “a shoe that changed the direction of the brand’s training business” – Gary Aspden. Our ADV version looks similar but has such improved features like taller, thicker foxing tape, a super grippy “geoflex” outsole, adiTUFF toe reinforcement, modified toe construction (clean toe under t-toe) and a formedsockliner. Foxing tape. Super grippy “geoflex” outsole. adiTUFF toe reinforcement. Modified toe construction. formedsockliner.