Speedo Endurance10 (80% polyamide and 20% elastane) is a material of swimwears that are resistant to chlorine and sunlight. It is also 10 times more durable than conventional materials and more resistant to tearing. The swimwear will retain its shape and color for a long time and also provide great comfort. Thanks to the durable fabric the swimwear retains its shape even in intense use and also resists chlorine due to the use of highly chlorinated elastane Creora Highclo. They are lined with a lining. This is a weaker layer of fabric under the upper fabric. The lining contributes to the durability of the swimsuit and swimsuits are not transparent after soaking. This is especially true for swimwear of lighter and white color. The only disadvantage of the lining is that swimsuits will dry longer. Swimsuits have a medium cut. (Medium Leg) This swimsuit has a Muscleback style back. This cut is typical for training swimwear as it provides an optimal range of motion when swimming.