Men's Shoes
Blackrock Sentinel Composite Safety Boots, S3, Composite Toe Work Boots, Mens and Womens, Lightweight, Wide Fit, Metal-Free, Water Resistant, Non-Steel Safety Shoes - Size 11
BUILT TO WORK: Composite non-metallic toe cap protects against impact from falling objects and against compression, giving 200 Joules of protection - equivalent to dropping 20kg from a height of 1m or a weight of 1.5 tonnes resting on the toe area...
https://www.bizrate.co.uk/mensshoes/blackrock-sentinel-composite-safety-boots-oid8225797254.html