1. Manual measurement 1-3cm error/weight 0.1-0.3kg is allowable

2. Due to the long distance transportation problem,the Products will be a little fold ,not so flat as picture,but does not affect the Use

3.To offer you the best price and the fast shipping, the package will be vacuum-packed  (to save the volume), after you receive the package, please open it and put it on the bed, it will recovery as the photo.