Manufactured with heavy duty water retardant fabric. It has ample room to neatly carry your medical equipment with removable moveable dividers inside to help you organize your supplies. The two large zipper end pockets have reflective high-vis stripes. External straps wrap completely around bag for additional strength and durability. Side zipper pocket is 15 inches long with 3 inner pockets and 6 elastic instrument holders. Comes complete with padded shoulder strap.