This is a small (2.5L:M size) pack of the representative model "TR" of THE NORTH FACE FLIGHT SERIES, which continues to evolve as a technical pack for full-scale trail races. The main fabric is 100 denier nylon, which is both durable and lightweight, and is combined with stretch fabric to ensure storage space and create a smart shape. The back is made of highly breathable lightweight mesh treated with Polygiene, which has antibacterial and deodorizing properties using silver ions. In addition, three chest straps are placed on the shoulder area, including a movable upper strap, to improve fit and hold. The external stretch pockets, which have a storage capacity that exceeds the internal capacity, include not only visible storage pockets on the shoulders, but also a large pocket on the front of the pack, designed for convenience that can be operated without stopping. It has a corded stabilizer that allows you to compress the main body while carrying it on your back, and the fit can be adjusted according to the capacity of your luggage. Recommended for short to middle races that require minimal equipment. [Function] Highly breathable lightweight mesh with polygiene processing on the back / Main compartment that opens wide with a center double zipper / Compression bungee cord / Stretch pocket at the bottom of the main unit that can be accessed from the top and bottom and left and right / Dedicated reservoir compartment / Soft binding tape that feels good on the skin / Stretch bottle pocket with rubber spindle on shoulder harness / Three-dimensional stretch slit pocket at lower front / Security mesh pocket with whistle zipper inside stretch pocket on lower right side of front / Stretch on left side of lower front Mobile slit pocket with anti-slip inside pocket / Stretch slit pockets on both sides / 3 chest straps for improved fit / Top chest strap is height adjustable / Lash point / Reflector logo Dimensions: M /Length 42 x Width 40.5 x Hem width 33.5cm, L/Length 44 x Width 44 x Hem width 37cmCapacity;M/2.5L, L/3Lweight;M/Approx. 255g, L/Approx. 270g