Bio-Stretch Zone: Strategically placed 1.5mm panels (under arms and lower back), 1mm panels (arm, shoulder and collar) Core Power System: Internal support system that improves posture, enhancing hip rotation and lengthening stroke 5mm Aqua Drive core body panel maximizes buoyancy and reduces drag thanks to Aerodome Neoprene Thermo-Guard technology on chest, shoulders and legs to retain body heat Quick-release ankle transition panels (horseshoe-cut design) for improved transition time Extended length, reverse-pull zipper with leash for easy on/off and quick transitions Aqua-Flex collar seal to keep water out and prevent chaffing and restriction Super stretch, SCS-Coated Yamamoto 40 Neoprene for ultimate flexibility 100% UV protection Size: XXS