Race in comfort with the knowledge that you are assisting in preserving our atmosphere. Speedo Quantu Splice - PowerFLEX Eco is made from 100% pre and post-consumer nylon yarn waste. The revolutionary PowerFlex Eco is 3X more compressive and 30% more resistant to fiber breakage than the original PowerFlex. It features a powerful mesh support, an oval-shaped cup and extra-soft plush elastic which provide a comfortable, athletic fit. This reduces bounce and shifting for a more comfortable workout.