Diagram: Tracker's boots

This diagram can be purchased from most armorers, including:
 * the Armorer in Midcopse
 * the Armorer in Oxenfurt
 * Fergus Graem
 * Willis
 * Yoana
 * the Merchant at the Ard Skellig sawmill
 * the Armorer in Larvik
 * the Armorer in Kaer Muire
 * the Armorer in Kaer Trolde keep