Australian Style Waxy Leather Chelsea Boots - Melbourne BrandSuperior full grain cow leather with thickness 1. 8 2. 0mm. It is treated with breathable technology to keep feet dry. Tear strength is 10% higher than Europe & USA test requirements, to ensure a longer life span. The Safetoe Superior insole includes a breathable mesh, super memory foam and a shock absorption layer. The Air cool design insoles breathe effectively and offer long term cushioning. Memory foam greatly reduces pressure to minimise ankle