NEOS 31" River Trekker Nylon All Season Waterproof Overshoes (RTK8) 900 denier nylon upper is windproof & waterproof to resist the harshest conditions, and snag & brush-resistant for easy movement in tough terrain; lightweight design helps prevent foot & leg fatigue Extra wide gusset slides easily over work boots and shoes for easy on/off; adjustable hook and loop closure system for secure fit Vibram Ninja outsole with deep tread ensures good traction on slippery surfaces and rugged terrain Compact for convenient storage; optional 10 mm removable EVA insole adds comfort (sold separately) Recommended use: construction, surveying, fish & wildlife, farming and equestrian, outdoor general purpose,