Oliver 45 series safety footwear is constructed with liquid-resistant leather and features non-metallic eyelets for a true non-metallic boot. Oliver’s composite toe offers hi-impact protection and is 40% lighter than traditional steel toe caps for less fatigue when worn all day. Boots are fully lined, with padded collar and tongue for wearer comfort. The 45 series all-terrain TPU soling technology consists of a lightweight shock-absorbing low-density PU (polyurethane) mid-sole the outsole cushions the foot with each step for excellent comfort.