This is the ultimate cooling gel sheet! A must-have for those who get hot easily and want to cool down immediately! I used it once on a tropical night... but it was too cold for me, and it absorbed my body heat so much... I stopped using it because I was cold... f(^_^; I think this is the ultimate cooling mat that you don't usually see in stores. It absorbs heat like you're sleeping on ice. I hope you'll give it a try. I've only used it once and have kept it stored neatly. I think I bought it for around 6000 yen. I will sell it at a bargain price. Size: For single beds, 90 x 140 cm