This unique training aid permits the realistic practice of starting an IV as well as being an excellent model to practice the mechanics of no stick IV catheters. Model displays blue veins which are barely discernible through the semi transparent, tissue like material. When accessing, the skin rolls as you palpate the vein and a pop is felt as the needle enters the vein. This model has three veins of different diameters and a fourth vein deeply placed. Model enables the user to increase the difficulty and thus improve skills. Made with latex free Dermalike™ that offers 50 percent less needle drag when accessing and improved tear resistance which permits a greater number of needle sticks. Also comes with a protective, snap on cover over the tissue pad. This lightweight, easily transportable, economical, and nonstaining training model is an alternative to larger, heavier, and more expensive models. Overall dimensions 6 and half inches by 5 and half inches by 1 and one quarter inches.