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 constructed 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 kick-off heel area. The PU rubber sole offers 300 heat resistance. It includes a fiberglass cap and a flexible FAP midsole. Safety Category: S3 WR HRO SRC.