Simple Knot (bracelet)Vegan bracelet with silver metal and two strings of cork tied in a knot. Made in Portugal with high quality portuguese cork. Color: Two tone blue Clasp: Magnetic zamak clasp What is zamak? Zamak is a great quality hypoallergenic metal designed for sensitive skin. It keeps the skin clean and healthy, because it does not stain and it does not deteriorate with time. Lighter than steel, zamak jewelry are very comfortable, attractive and tough.