The insoles contain bamboo fibers, alum and activated charcoal – all three provide an extremely powerful athlete's foot, mycosis and odour treatment. LAB TESTED: The insoles have been lab tested. COMFORTABLE: Soft latex foam cushions and amortizes your feet. These insoles will enhance your walking experience. Designed for everyday and casual shoes, sports shoes, and smart shoes. CUT TO FIT ADJUSTABLE SIZE: Worried about not getting the right size? Just cut out the size pad according to the cutting guides. Maximum length is 30 cm (11.8 inch). Maximum size is 46 EUR /12 UK / 13 US Men. 1 package contains 1 par. Can be hand-washed. CRAFTED WITH PASSION: Manufactured in Europe by a family business with decades of experience in shoe insoles craftsmanship.