CONSCIOUSLY CREATED: Recycled PET plastic bungee upper and lace lock system for a secure fit with a smaller environmental footprint TRACTION: KEEN slip resistant AquaGrip rubber offers sure footing on slippery surfaces FIT & COMFORT: Women specific design is wider than the industry norm for improved fit and comfort in and out of the water; Light flexible cushioning springs back after each step CLOSURE: Lace lock bungee capture system provides a secure fit while offering a quick and easy way to get footwear on and off HEEL LIFT: For a more forward stance and look, plus a cupped heel for stability