Pinnacle Merino-Elastiprene Siren 5mm Jumpsuit, Women's This Item Includes: Pinnacle Merino-Elastiprene Siren 5mm Women's Jumpsuit Quantum-Leap Forward in Incredible-Flexibility and Unsurpassed-Insulation Capability Pinnacle's 5mm Elastiprene Neoprene: More Flexible-and-Stretchy, Easiest-to-Don-and-Doff Best-Fitting, and Most-Comfortable Suit to Wear High-Stretch Wetsuit Provides Warmth, Comfort, and Durability