I am selling these items because I purchased them but only used the blue one once, and never used the yellow one. When unfolded, the dimensions are approximately (amateur measurements): Seat width: 54cm Height: 66cm When folded, it's approximately 35 x 13 x 10cm. Assembly of this type of compact chair requires some skill. This is a "as is" sale, so please bid only if you agree to no claims and no returns. I will strive for a smooth transaction, so thank you for your understanding.