The Ultimate safety Boot for the Contractor, tradie or simply for those who need a tough work boot for harsh working environments. The Puma Safety Sierra Nevada 630227/630527 has a full waterproof breathable membrane, not just water resistant but a fully waterproof work boot. Additionally it is electrical hazard rated and has a 300°C heat resistant rubber sole. Also packed with many other features such as a toe- cap in composite material to reduce weight. Puma Gel system embedded in the heel, scuff cap over-toe protection. Full nappa leather tongue. High quality waxed leather upper. CERTIFIED TO AUSTRALIAN/NEW ZEALAND STANDARDS AS/NZS 2210.3:2009 Protection: Composite Toe Cap - Electrical hazard rated Plus: Cushioning GelCell integrated in the heel area Upper: Waterproof waxed premium leather, dust tongue and collar of soft nappa leather Lining: BreathActive functional lining with WATERPROOF membrane Insole: Puma® evercushion soft PU with Poron inserts, anti-static and anti-fatigue Sole: Rubber sole scuff caps with EverFlex decoupling point, up to 300°C heat resistant Sizes: 6 - 13 Full UK Sizes Only