The Advanced Venipuncture Training Aid features four barely discernible blue veins in three different sizes, with the fourth vein deeply placed. As the IV catheter enters the vein, a realistic "flashback" of simulated blood confirms proper needle placement, helping build hand-eye coordination, confidence, and improving competency, while insuring the safety of future patients.Hinged top and base eliminate the need to pass components through the topMade of Vata's realistic latex-free Dermalike II™ materialLeak resistant; features a single length of tubing, no connections neededBubble trap and stopcock removal and replacement confirmed by an audible clickHinged top has an integral molded hook for placement of blood bagCan be accessed 3,600+ times using a 20G IV catheterAvailable in light and dark skin tonesUser manual includedDimensions: 12.8" L × 5.9" W × 2.5" HWeight: 2.1 lb.