CHECK THE PROVIDED SIZE CHART (in image section above). Sizing is specific to this item and will not correspond with your usual clothing sizeClassic sports styling, straight from the Speedo archives. Performance swimwear. This sleek, tech-inspired ECO Endurance+ Pro Jammer is packed with technical innovations that help take your training to the next level. Striking in black with a graduated plastisol print design, the jammer includes a silicone gripper waistband and a flat drawstring that sits within a dedicated waistband channel for a customized fit. The V-cut design with rubberized liner ensures you feel supported and comfortable, while anti-microbial technology keeps the jammer fresh swim after swim. Designed to be durable and better for the environment, it’s made from Speedo's new ECO Endurance+ Pro fabric, which is 100% chlorine resistant, quick-drying, made from 50% recycled materials. These Speedo jammers are finished with a water-repellent and anti-microbial treatment. Key Features: Performance Waistband – silicone gripper elasticated waistband, designed for a comfortable, secure fit Flat Drawstring - sits within dedicated waistband channel for additional security and customized fit V-Cut Design – supportive cut with Integral V-Cut Power Mesh Liner – for enhanced comfort & support C0 Water repellent treatment – environmentally friendly PFOA-free treatment encourages water to roll off the surface, and gives a drier feel after your swim Anti-microbial treatment with Sanitized® Freshness – inhibits bacterial growth, providing long-lasting freshness 100% Chlorine resistance – for long-lasting performance 50% Recycled Content – one of the yarns is made from 100% post-consumer waste, such as recycled plastic bottles