Nylon Made in the USA and Imported Cleated rubber outsole with recessed stud insert point for maximum traction in moving water, on slick rocks, and muddy river banks Steel wading studs are included with the Stonefly wading shoe which can be worn with or without steel wading studs Reinforced Rock Jam toe cap combined with the stiff reinforced midsole give this wading boot a lasting protection Reinforced heel pull for easy on and off river side, Padded collar for a comfortable fit around ankle, and gravel guard D-ring attachment point for secure fit Designed to be worn with stockingfoot wader booties so there is no need to go up in size