I purchased this in April, but I haven't had a chance to use it, so I'm putting it up for sale. I've taken the contents out, but I haven't sat on it in a chair or anything. - Model Name: GLO01 - Material: Gel sheet - Features: Three effects - How to use: Distributes pressure when sitting - Portability: With handle - Size: Width 32cm x Depth 25cm x Thickness 2.5cm If you have any questions, please feel free to ask and I will respond. Please note that I will delete comments that have been up for a while. Thank you for looking.