The Sonar is Orca"s most popular wetsuit and features a supreme balance of performance and value for money. This wetsuit is ideal for those that are serious about open water swimming and looking for a wetsuit with more performance and quality than your average entry level suit. The Sonar sits firmly at the next level with a raft of technology designed to provide you with a high level of performance.The Sonar now features panels with Orca"s Aerodome neoprene 5mm panels that contain hundreds of air cavities that provide over 30% more buoyancy than a standard 5mm neoprene. Aerodrome is positioned in the small of the back and back calf area to help lift the torso and legs in the water and provide you with heightened speed and performance on your swim. This is further enhanced by the use of a seamless front 4mm HydroLift Body Panel.In addition the Sonar"s panel construction has been modified to enhance flexibility in the shoulder and arm areas. This has been achieved by utilizing a DeltaStretch Shoulder Panel, HyperStretch Underarm and MultiStretch inner lining providing excellent range of movement. The Sonar also benefits from the comfortable new low profile neck seal that"s designed to sit flat against the neck, limiting water entry and reducing chafing.HydroLift Buoyancy Cells are positioned on the upper forearm sleeve area to encourage a better arm position in the entry and catch phases of the stroke whilst increasing power and reducing fatigue. The 3mm stretch neoprene Speed Transition Calf Panel, allows an easier and quicker transition whilst The HydroStroke Forearm Panel catches the water through the pull phase of the stroke, increasing power.Features:*Low profile neck limits water entry, reduces chafing and drag*Slipstream zip; low drag and easy to use*Silicone Hydrostroke forearm panels, increased water catchment for more pull and traction*39 Cell Yamamoto Neopren