The Bynars competition trunk is designed for intensive training purposes with the Waternity technology allowing for longevity and comfort. More time in the pool translates to improved results.Waternity provides maximum resistance against chlorine degradation and sunlight. Waternity contains no elastomer, which is the fibre most susceptible to the harmful effects of chlorine, yet it remains perfectly elastic. Waternity feels incredibly soft to the touch, despite being an extremely robust material, it dries extremely quickly with significantly reduced water absorption compared to conventional polyester/elastomer materials.