This is gray, thin hem tape. I bought it to hem my child's uniform. It's 1.5m long, but it's cut into 121cm and 25cm pieces. I'm not sure if I intended to use the 25cm piece on one side of the pants... my memory is hazy. The 4cm difference is because the fold isn't fully extended, so I think it's probably 1.5m. Please understand and refrain from purchasing if you are not okay with this.