5 mm base and 4 mm studs

important for growing feet

and a waterproof membrane

the oil can be applied with a soft sponge or cloth

Insole : 90% Recycled Polyester

Xero Shoes Kelso Mens Size:40 5 mm base and 4Description Combines traditional design with barefoot principles. Ideal for sports, everyday use and office environments. Natural Toe Movement: Wide toe box ensures unlimited comfort for the feet. Ultralight Construction: Weighs only 300 grams in men's size 42, which increases mobility. Durable Construction: Made of quality leather and suede for long lasting use. Flexible Style: Easy to combine with different outfits, from sporty to casual. Barefoot