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.