• Ultra-thin 3.5 mm rubber sole that provides maximum barefoot sensation. • Wide fit that allows optimal freedom of movement for the toes. • Lightweight and breathable outer material that prevents heat build-up and keeps feet cool. • Lightweight: approximately 208 g (size 42), less than 200 g without insole. • Option to remove the insole for a natural barefoot feel. • Seamless construction (except for the heel lining) that prevents chafing and blisters.