The North Face Summit Series Black, Size M, Trail Running Backpack, Summit Merry Christmas! I received this as a Christmas present, but the size doesn't fit me at all as I have a large build. Also, I run but don't do trail running, so I'm reluctantly putting it up for sale. I realized this just by trying it on, so I haven't used it even once, and the tags are still attached. This is a representative model of THE NORTH FACE SUMMIT SERIES, a lightweight and highly storable running vest that continues to evolve for serious trail races. It's a medium-sized (9L: Size M) pack from the 'TR' series. This is a medium-sized running vest for serious trail races, using durable and lightweight materials. It utilizes stretch materials to secure storage space. The back uses a highly breathable and water-resistant mono-mesh to reduce stuffiness and maintain a comfortable fit. It has three chest straps to improve the fit, and the shoulder harness is equipped with pockets and slit pockets. The fit can be adjusted according to the capacity of the luggage, and it has the functionality for middle to long races. Color: Black系 Accessories: None Stains/Tears: None