Sherwood Onyx Freediving Fins

Quick answer: The Sherwood Onyx is a long-blade freediving fin made in sizes all the way up to 3XL, which fits men's 16/17. If you've given up on freediving fins because the foot pockets stop at a 12 or 13, this is the one to check.

Why bigger divers look at it

Most long-blade fins top out well before a size 16, which leaves a lot of us out of freediving and spearfishing before we start. Sherwood runs the Onyx from XX-Small (2/3) all the way to 3X-Large (16/17). Long blades move a lot of water with each slow, relaxed kick, so you save energy on long surface swims and breath-hold dives, and bigger legs can put that power to good use.

What you get

• Long-blade freediving fin for freediving, spearfishing and snorkeling
• Full-foot pocket in sizes from XX-Small (2/3) to 3X-Large (16/17)
• Part numbers FN800 to FN899

Before you buy

Full-foot pockets don't stretch, so match the size to your bare foot or a thin fin sock. Pricing varies by size. Long blades take practice on entries and in tight spaces. Choosing a blade? Read Best Scuba Fins for Heavy Legs. More options: Fins for Big Feet (Men's 13 and Up).