Constructed from waterproof black leather hide and featuring a tough scuff cap and heel support, this boot is well suited to extreme environments. Lightweight and metal-free, it is built on a new exteme comfort shape and has an improved shock absorbing footbed for daylong comfort. The innovative new STS sole unit provides superior traction and stability across a wide range of surfaces and fire fighter ladder grips for safe working at height. Upper: Fully waterproof with a bellows tongue and waterproof lining which allows breathability and reduces perspiration. Scuff resistant heel and toe for durability.Lining: Waterproof lining that breathes to reduce perspiration. Footbed: The dual comfort insole features unique airflow channels to maximise air circulation and reduce heat. With twin antishock foam pods at the heel and the ball of the foot. Toecap: Wide fitting composite non sparking and thermal insulating. Tested to impact of 200 Joules.