SPEEDO PowerFLEX ECO Laser Sticks Jammer This eco-friendly jammer is constructed with Speedo's PowerFLEX Eco? fabric, which features yarns made with 100% recycled Nylon.* Fabric retains its shape up to ten times longer than traditional swimwear fabrics and offers four times the compression.* Jammer silhouette provides great coverage and streamlined performance.* Resists sagging and bagging.