Arc'teryx Fyx 13 Messenger Bag FYX 13 BAG - Streamlined, smart and versatile, the Fyx 13 holds the essential gear for modern urban living. ADVANCED COMPOSITE CONSTRUCTION - Laminated, highly waterproof and light weight. Taped seams, permits custom attachments. DAYPACKS - Functional packs streamlined for ease of use and light weight. Activity-specific designs. LIFESTYLE - Technical outdoor functionality, comfort and durability brought to everyday designs.