SPIDER-MAN REAL WEBS FLUID REFILL: includes one refill pouch of non-toxic Real Webs fluid INSTALL REFILL POUCH: open the blaster to snap the pouch into place USE WITH THE REAL WEBS ULTIMATE WEB BLASTER: this web fluid refill is only compatible with the Real Webs blaster. (Sold separately.) WEBS ARE PLAYABLE: when used with the Ultimate Web Blaster (sold separately), web fluid turns into blue gel-like webbing that kids can play with!