Features: Flexible Strobel Construction with Sebago Water Drainage System Lycra/Neoprene and Mesh Upper Padded Tongue with Embroidered Eyelets Removable Anatomical 4.5mm EVA Ventilated Footbed Reinforced Protective Rubber Toe Bumper Mesh Lateral and Medial Sole Drainage System Sebago Siphon Sole with Slip-resistant, Non-Marking Protective Rubber Sole