Orca’s latest generation S-Series Speedsuit, the S4 has been completely re-designed with all new performance grade materials, setting a new benchmark for entry level open water swimming wetsuits. Building on the popularity of the Orca S3, the S4 now offers full neoprene coverage, including premium SCS-Coated 3-4mm Yamamoto #39 Cell Neoprene across the full front of the wetsuit for hydrodynamics, flexibility, buoyancy and durability. The back of the S4 is constructed from 3mm Smooth Skin Neoprene, providing high levels of buoyancy and thermal protection. The Speed Transition Panels on the calves make removing the wetsuit much easier. The new Flexiseal Neck is constructed from soft, supple #39 Cell Neoprene.