Open heel fins have a foot pocket with an adjustable back strap, making them easy to put on and take off. This style is sometimes best worn with dive booties for comfort, warmth, and fit.

What type of fins do you swim with? For the casual swimmer, a slip on pair of flippers is fine, but if you are SCUBA diving or training for Special Ops programs, you will need REAL fins.

Military.com tactical fitness expert Stew Smith advises a reader about whether dive boots or dive socks work best while swimming with fins in BUD/S.