23" Inflatable Knife Halloween Decoration 1 Inflatable Horror Knife Halloween Decoration Inflatable Horror Knife measures 23"H x 6"W x 3"D when fully inflated This inflatable knife features bloodstains and is ideal for any frightening festivity including a Halloween party or a haunted house Halloween Inflatable can be used as a party decoration or as a fun costume accessory Don't forget to combine with other Halloween party decorations from Unique