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. The boot features an oiled full leather construction with an extra high shaft, a lateral YKK-zipper with a closed dust tongue, TPU Heel Support, and KickOff in the heel area. It has a PU rubber sole with 300 heat resistance, a flexible FAP midsole, and meets S3 WR HRO SRC safety standards. Safety Category: S3.