This is the most versatile, secure fitting FiveFingers product they have to date. Hook and loop closures along the heel and instep provide a comfortable secure fit. A thin, abrasion-resistant stretch polyamide fabric fits low on the foot for a comfort and quick drying. A flexible, non-marking TC1 performance rubber sole is razer-sipied to enhance grip over a variety of terrain. Best For: Light hiking, travel, pose method or chi running, fitness training, yoga, pilates, sailing, boating, kayaking, canoeing, and surfing.