Brandon Nicholas, NASM-certified personal trainer at The Fitness Tribe. 1997 Mar;26(2):107–114. She says the air-cushioned sole is super-comfortable, and she appreciates that they’re slip-resistant. The Kane Revive is much more sleek and streamlined, with a soft upper and sole made from BouceBack foam (a material created using sugarcane). Ramones,1978 (AF archive/Alamy)