This is the most versatile, secure fitting FiveFingers product 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 comfort and quick drying. A flexible, non-marking TC1 performance rubber sole is razor-siped to enhance grip over a variety of terrain. Best for Light hiking, trekking, travel, pose method or chi running, fitness training, yoga, pilates, sailing, boating, kayaking, canoeing, and surfing.