The orca sonar is great for you if you are stepping up from an entry level suit and are looking for extra speed flexibility buoyancy someone who is planning to give middle distance half im 703 triathlon a go upgrade your entry level suit the sonar is a great intermediate suit and ideal if you are looking to move on from your entry level suit the suit combines 4mm aerodome in the lower back with 15mm infinityskin in the arm to give you that lift in the water as well as the perfect level