Gen II Transparent Central Line Replacement Tissue Includes Replacement Part Compatible with BPP-049 and BPP-050 Models, Replacement Skin comes Pre Filled with Blue Phantom Ultrasound Refill Solution (Blue Fluid in the Venous System and Red Fluid in the Arterial System). Blue Phantom products are not returnable. This does not effect exchanges due to defects to the product. Product is covered under 1-year warranty.