Hydréa London Natural Pumice Curved Wooden Foot File (PUSW) Hydréa London Natural Pumice Curved Wooden Foot File (PUSW) Ideally curved to help get to even the toughest areas, the Hydréa London Natural Pumice Curved Wooden Foot File makes removing hard, dry skin and calluses easy using an ultra-effective exfoliating action. Leave your feet Summer-ready and in fabulous condition, healthy and radiant.