My daughter received this for her 5th birthday & couldn't wait to crack it open.  The 'squishy' organs had significantly more detail than I expected, and the forceps & tweezers to remove them with made her feel "like a real doctor" as she said.  There are also a bunch of removable bones & muscles.  Combine this with a mat to place everything on to keep it organized & labeled, a nice book explaining what you are removing and how it helps the body, and detailed instructions on how to easily replace everything made this a winner for me to.  My daughter is already asking when we can do it again.  Highly recommend.