ARK Keel™

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This is your KEEL™. A swimrun pull buoy designed for speed. Developed and optimized by the world’s best swimrun athletes and the swimrun community, the distinctive shape will minimize drag and maximize floatation for you to move as fast as possible through water.

  • High buoyancy effect - 46.1 N
  • Lightweight
  • Hydrodynamic design
  • High comfort

Length: 28 cm
Height: 26 cm
Width: 12 cm

Weight: 172 g


The unique shape of KEEL™ is inspired by a boat’s keel and delivers great results when it comes to hydrodynamics and speed. Its “saddle” carved top part optimizes the fit and directs the buoyancy center towards your stomach. This unique fit increases the balance and gives you a fast water position.

Also, the shape of KEEL enables you to comfortably keep the pull buoy in place without effort on your legs while swimming.


The massive buoyancy of KEEL™ together with the snug fit makes it ideal for swimrun but is equally suitable for a welcome floatation addition to your off-season pool swims. For the sport of swimrun, KEEL™ is designed to be worn on the thigh while running but can also be placed on the lower back.

KEEL™ is made of EVA foam with a floatation of 46.1 N.