Massive Appendix Plush I Heart Guts Feel It In Your Guts No appendix... No problem! Take our appendix pillow home with you. Give the present of an appendix that wont burst. Microbiome not included. Adorable appendix comes with an awesome hangtag all about this vestigial organ. Soft and snuggly appendix plush measures 15 in long x 6.5 in tall x 4 in thick. 100 percent polyester. Safe for all ages. Made in China.