These fins were originally used by the Navy Seals underwater demolition team

Adjustable audio vents allow further flexibility to shut out the cold wind or open to improve hearing

These fins have a roomy

a removable shoulder sling

In less scientific words:

Kook-Off Sunscreen Remover and After Sun Care 42 These fins were originally usedMineral sunscreen remover that actually works. Zinc oxide and mineral SPF are better for your skin and the ocean, but they leave a stubborn white cast that regular soap can't touch. It gets caught in your beard, clings to your hairline, and sticks around for days. Kook Off is a zinc sunscreen remover made with coconut oil and organic aloe vera that breaks down even the thickest mineral sunscreen fast. No scrubbing. No residue. Just clean, hydrated