This durable bag looks and functions more like a duffle bag than a transition which is awesome. It can be carried on the side or on the back, providing great flexibility when traveling or trying to wrangle a bike. There are dedicated pockets for a helmet, water bottles (as many as three), and wet items. It includes a changing mat which is great for laying out your transition area and keeping your gear clean. The storage space is ideal for race gear, or gear for a short trip. With a volume capacity of 55L, this bag has enough room for a short weekend getaway too. We do like products that multi-task.