Billabong Wetsuits - Billabong Women's Synergy 3mm Back Zip Wetsuit - Black/Fog/Cyan :: Women > Wetsuits. Back Barrier: Channels any flush out through drain holesFull Back zip: For easy entry and with a water resistant YKK zipKey Loop: Internal with easy accessFurnace Thermal Lining: Retains body heat in critical areas allowing you to surf harder for longerAX2 Airlite Superflex: A new light-weight. super-soft. flexible but economical neopreneContour Collar: Watertight and cut to the contours of the neck for great comfortStrategically Placed Panels: Placed in optimum positions. Stretches & feels like an elite suit. without the price tag Size: 14,16.