He(9) made a Sans from Undertale mask for his cosplay. : r/3Dprinting
Undertale Sans Luminous Mask Sans Papyrus Led Mask Cosplay Halloween Props Latex | eBay
Undertale Sans Mask Latex Cosplay Helmet Led Light Up Masks Luminous Hood Masque For Halloween Party New Year Night Club Costume - Led Spotlights - AliExpress
Free STL file Sans Mask from Undertale・3D printable model to download・Cults