Our Neoprene Jammers are an innovative training design for triathletes and swimmers. By offering the buoyancy of a wetsuit, you can train indoors and prep yourself for what it will feel like racing in a wetsuit. With its lifting effect for the lower body, you can also use these jammers as a pull buoy with the added benefit of being able to kick and turn with maximum range of motion. Made from Yamamoto Aerodome neoprene for maximum buoyancy, the internal surface is laminated with arena’s carbon cage fabric for muscle support. Textile thickness varies in targeted areas for even better core stability. Equipped with a draw cord for a personalized fit.