PRO TEC Pro Tec Trumpet Single Case Semi-Hard This is a semi-hard case for trumpets made by Pro Tec. It's a single case, so it holds one trumpet. It's the backpack type. It's built very sturdy, so I think the strength is excellent. The inside where the instrument is stored is in good condition. The exterior has some scratches and signs of use, so please check the photos. One of the zipper pulls is missing. It's a case that can also hold small items and sheet music, so I think it will be useful.