Cordo-Hyde Waxed Shoe Laces 1 Pair
These are thin cotton waxed shoe laces that look like leather and stay tied. This is also the lace used in English Riding boots, they come in different sizes and colors.
Wax-impregnated laces are the most durable of all and will stay tied because the wax has been force all the way through the fabric, rather than just coating its surface.
Shoe Laces Size and Colors