EXPLORE THE ARK KEEL FAMILY

The unique shape is inspired by a boat’s keel and delivers the highest hydrodynamics and speed. In addition, the “saddle”-carved top part optimizes the fit and keeps the pull buoy in place while swimming. As the first to introduce this design to the swimrun world, ARK set a new standard—one that others have since taken inspiration from.

• Hydrodynamic shape
• Lightweight
• Durable
• High comfort during swimming and running sections

One shape -Different sizes

• ARK Keel™ Mini – Our smallest model—ideal for the pool, technique drills, or for thirsty swim coaches who want something compact and convenient.
  28CM X 14CM X 12CM
  
  
• ARK Keel™ S – Works great in the pool, and is a solid choice for younger swimrunners or adults who prefer a smaller, more manageable buoy—especially if you’re new to the sport.
  28CM X 20CM X 12CM - 148GR
  
  
• ARK Keel™ – The original all-rounder, the perfect “lagom” size. It was the first swimrun-specific buoy we ever made, and it remains a favorite. If you're just getting into swimrun, start here—it’ll help you find the right feel in the water without straining your lower back.
  28CM X 26CM X 12CM - 172GR
  
  
• ARK Keel™+ – For those who’ve done a few races and want more power in the water. With extra buoyancy and a faster position, it’s built for speed and performance in every swim.
  28CM X 30CM X 12CM - 225GR
  
  
• ARK Keel™ MEGA – Made for top-level athletes who are willing to trade a bit of comfort for maximum performance. It’s the biggest, fastest pull buoy on the market—and it means business.
  32CM X 30CM X 15CM - 240GR

Choosing a larger pull buoy means more lift—and more speed in the water.  The bigger the buoy, the faster you swim.

That's just facts.