The calf circumference is approximately 360mm

the Amblers AS101 Alice is a great option

and protective boots designed for workers in a variety of industries

Leather upper for durability and comfort

Amblers AS335 Poron XRD Internal Metatarsal Safety Boots 6401100000 The calf circumference is approximatelyLeather safety boot with Poron XRD internal metatarsal protection, 200 joules steel toe cap, antistatic and steel penetration protection. Water Resistant Leather Upper Breathable Mesh Lining 200 Joules Steel Toecap Anti penetration Steel Midsole Poron XRD Internal Metatarsal Protection Deep Padded Mesh Collar Removable EVA Footbed Dual Density Injected PU Outsole Upper Outer Material: Action Leather Lining Material: Mesh Sole Material: Dual Density PU