New Balance Calibre offers everything you expect from your work boot. Comfort is supplied through the NB comfort insert and durability via the rubber outsole. With a premium nubuck leather upper, Ndure abrasion resistant collar and Toe Protect, your feet will feel supported all day long. Debris Free construction ensures additional protection from the elements with the added benefit of a YKK zip per which will provide easy access moving across site. New Balance Calibre will be your ultimate worksite companion. COMFORT WHILE YOU WORK These are our suggested alternative to the New Balance Contour work boots. Width 4E Features Anti-perforation midsole Slip resistant outsole Water resistant leather upper Composite toe Heel counter support Airport friendly YKK zipper Heel and tongue pull tab Nb PU comfort insert Size: 7-12, 13, 14 Width 4E Some other great features included - AT Tread - A dual-use outsole tread combining both trail and running lug designs for on and off road. Toe Protect - Reinforced toe tip designed to help protect the toes NDure - NDure is an NB proprietary PU that gives added durability and endurance Debris Free Construction - Advanced upper construction designed to keep debris from entering the shoe. Heat Resistance - The outsole is heat resistant to very high temperatures (up to at least 300C for 60 seconds) STANDARDS EN ISO 20345:2022 Class I S3L FO HRO SR SC AS 2210.3: 2019 Class I S3 HRO SRC Size Chart AU/US Womens Size US Mens Size UK Mens Size EU Size Foot Length CM 6 4.5 4 37 22.5 6.5 5 4.5 37.5 23 7 5.5 5 38 23.5 7.5 6 5.5 38.5 24 8 6.5 6 39.5 24.5 8.5 7 6.5 40 25 9 7.5 7 40.5 25.5 9.5 8 7.5 41.5 26 10 8.5 8 42 26.5 10.5 9 8.5 42.5 27 11 9.5 9 43 27.5 11.5 10 9.5 44 28 12 10.5 10 44.5 28.5 11 10.5 45 29 11.5 11 45.5 29.5 12 11.5 446.5 30 12.5 12 47 30.5 13 12.5 47.5 31 14 13.5 49 32