Seek out adventure in the ASICS. GEL-Frequency33™ SB walking shoe. The perfect choice for those new to fitness, this women's trainer is designed to promote natural foot movement inspired by the 33 joints in the foot; the lightweight and breathable nubuck and mesh upper offers a stylish, comfortable fit and feel. GEL. cushioning in the rear foot absorbs shock and helps to maintain smooth transitions. For enhanced durability, the trail-specific rubber outsole of the ASICS. GEL-Frequency33™ SB shoe features strategically placed ASICS. High Abrasion Rubber (AHAR.) in critical areas.