Funlife 3 Colors Available Moon Pattern Moonlight Cushion Glow in the Dark Pillow / Pillow Case Cover for Living Room (S , Yellow) This Product needs to absorb light in daytime, then it will glow automatically in the darkness. Pillow Case Size: small: 17.3inchx17.3inch, big: 25.6inchx25.6inch Pillow Size: small: 15.7x1.7x7.1inch, big: 21.7x21.7x9.8inch Material: high quality short plush+PP cotton Lighting: more than 4hours lighting in the darkness