... ISO 20345, S3 steel toe work boots manufactory1) Factory 2) OEM / ODM 3) steel toe work boots 4) Goodyear work shoes 5) EN ISO ... 20345, SBPGoodyear Welted Construction1) Upper: 2.0-2.2mm nubuck leather2) ... resistant.5. Shock absorbing heel6. steel toe work boots Safety Features: 1) Smash resistant, 2) punture resistant, 3) slip resistant, 4) ...