Puma Rio Low S3 SRC Safety Trainer with Composite Toe Cap Size:10.5 Can I replace the insole Can I replace the insole with custom orthotics Muck Boot recommends ordering your standard boot size The trainer provides a comfortable and antistatic properties Athletic Styling Iconic Puma trainer design combines sports performance aesthetics with workplace safety requirements Slip Resistant Outsole (SRC) Superior traction tested on both wet ceramic tile and steel surfaces using Puma sports technology Water Resistant Upper Durable materials resist water and moisture to keep feet dry during work Lightweight Construction Aluminium toe cap and FAP® midsole reduce weight for maximum agility and reduced fatigue Enhanced Flexibility Non metallic FAP® technology and low cut design provide natural foot movement and athletic freedom Breathable Design Ventilated construction keeps feet cool and comfortable during active work Cushioned Comfort Athletic inspired cushioning provides exceptional comfort drawing on Puma sports innovation Energy Absorbing Heel Shock absorbing technology reduces impact on joints using Puma athletic expertise