Ryka - Rhythm II (Black/Dove) - Women's: A studio shoe designed for the frequent participant; offers premium forefoot cushioning, overall shock absorption and stability. RYK's studio shoes are designed for a variety of activities such as High/Low Impact, Step Aerobics, Kickboxing, and Water Aerobics. Synthetic and open mesh upper for lightweight breathability and support. Full forefoot Nitracel provides premier forefoot cushioning. Midfoot TPU shank for midfoot stability. Rearfoot Cushioning Cartridge absorbs heel strike impact. Inspired by women, for women.