A fiberglass toe cap and cushioned, double density slip resistant sole keeps the Krypton Safety Boot light, flexible and ultra durable, so you can keep stable and comfortable on your feet all day. This boot is made from oiled full leather with an extra high shaft. It features a lateral YKK-zipper with a closed dust tongue, TPU Heel Support, and a KickOff in the heel area. The PU rubber sole has a 300°C heat resistance, and the boot includes a flexible FAP midsole. It meets S3 WR HRO SRC safety standards.