The SONOtrain™ Vein Model is an ultrasound block with three blood vessels with diameters of 4, 8 and 15 mm with adjustable fluid flow. Punctures and injections are possible with self-closing injection channels. The material of the SONOtrain™ trainer simulates the feel of real soft tissue for carrying out palpations and injections and shows realistic texture and echogenicity on ultrasound images. The SONOtrain™ trainer is easy to use as a teaching tool for basic training and for improving dexterity and hand-eye coordination skills.