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 two different-sized veins positioned at the same depth. Model enables the user to increase the difficulty and thus improve skills. Made with latex-free Dermalike™ that offers 50% less needle drag when accessing underlying veins 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: 6-1/2 in. x 5-1/2 in. x 1-1/4 in.