Buy Speedo Mens Essentials Endurance+ 7cm Briefs Black Mens Endurance + 7cm Brief True Navy Briefs Speedo Australia Endurance Speedo ECO Endurance + 7 cm Swimming Brief Blue Swiminn. Speedo Mens Eco Endurance 7cm Brief with; 7cm leg length Drawstring waist for a secure fit 100% chlorine resistance Quick drying capabilities This is an eco friendly style, partially derived from recycled materials. Made from: 53% Recycled Polyester 47% PBT Polyester (ECO Endurance +)