Jump Rope, Adjustable Jump Rope for Fitness, 10ft Skipping Rope, Anti-skid, Tangle-Free, Ball Bearing Rapid Speed Skipping Rope for Women, Men and Kids (Red) The Bak-4 prism has a

The Bak-4 prism has a perfectly round exit pupil

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The ergonomic design provides extra comfort in every shot

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Jump Rope, Adjustable Jump Rope for Fitness, 10ft Skipping Rope, Anti-skid, Tangle-Free, Ball Bearing Rapid Speed Skipping Rope for Women, Men and Kids (Red) The Bak-4 prism has aMain Features: Anti Slip&Soft Handles Jump Rope: This Skipping Rope is with two soft handle, made of Anti slip soft EVA memory Foam material and tangle free ball bearing system, feel more comfortable to hold in hand and soft to load your hand strength. Ball bearing system which is a high speed rope for exercise. Adjustable Length Skipping Rope: Our jumprope is 9ft long, with convenience length adjustable piston Ring, you can change the rope length