FIELDPRO THERMO+ FULL SAFETY wellington offers Purofort Ultra heavy-duty protection and fits like a sneaker.- Full Safety light weight heavy duty protection composite toe cap and mid-plate.- Unrivalled cold protection from the harshest weather down to -60C/-78F- Light weight heavy duty protection composite toe cap and mid-plate EN ISO 20345:2022 S5L CI CR SR FO LG- Fit perfected with Dunlop's innovative Snug-fit that eliminates heel slippage and foot fatigue- Extremely durable Purofort outlasts the competition and provides long lasting comfort- Purofort keeps feet warm when it's cool and cool when it's warm