There's no need to fear cool to cold water swims when you wear this Women's Aquasphere Phelps PURSUIT 2.0 Triathlon Fullsuit. This fullsuit features a super stretch SCS-Coated Yamamoto 38 neoprene with panel shapes that work to give you max flexibility and range of motion and is super durable and comfortable. The Bio-Stretch zone is made with strategically placed 2mm panels under the arms and in the lower back as well as 4mm Aqua Drive core body panel which maximizes buoyancy and reduces your drag. Other features include: quick-release ankle transition panels for improved transition time, Aqua-Flex collar seal to keep water out and prevent chafing, Thermo-Guard technology on the chest, shoulders and legs which works to retain your body heat, 100% UV protection, an easy-pull deep back zip, and durable sealed seams.