Simms Men's Guide BOA Wading Boots provide the maximum Vibram traction and durability for you to power through all obstacles in the river systems. These Men's Guide Wading Boots feature BOA, a unique dial, lace, and guide system where you can dial in micro-adjustments for an unprecedented fit. Dry, wet, icy, or muddy, you know that spending hours a day working the water demands a good fit for better stability and your overall comfort. After all, you want to think about fishing and not your uncomfortable feet. Rugged and responsive, the Simms Men's Guide BOA Wading Boots are a better way to make full days on the water comfortable and productive. Material: Soles: Vibram Upper: TPU-coated Toe and Heel: Rubber overlay Lining: Closed-cell neoprene Outsole: TPU plate BOA lacing system provides unmatched simplicity and security Pull-on loops for easy on and off Imported Please note: To allow proper room for a neoprene stockingfoot, Simms recommends ordering the Simms boot size that corresponds to your regular shoe size. Size up to the next whole size if you are a half size.