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