barefoot minimalist shoes Care instructions- Machine Wash Sole material- Rubber Outer material - Knit (grey) Closure type - Lace-Up • Non-elevated, "zero-drop" heel for proper posture. • Thin Sole, Low-to-the-ground design for balance and agility. • Knit upper in a minimalist sneaker goes well with nearly any outfit. • Lace up closure adjusts to your specific needs to ensure a customized fit. • The lugged slip-resistant rubber sole tread gives you sure-footed traction.