Brand does matter!  Apollo Bio Fins are the original and only split fin made from 100% natural rubber.
 
*Auto adjust stainless steel spring strap.
*Oversized rubber heel protector for easy on/off.
*Eliminates muscle cramping.
*Low Strain 20º angled blade works with the natural resting angles of ankle and knee.
*Easy finning for all levels of fitness.
*Increased maximum speed, reduced fatigue.
*Up to 40% reduction in muscle fatigue, energy output and air consumption; longest recorded bottom times during testing.
 
COLORS: Blue, Black, Pink
SIZES: S, M, L, XL.