1. What is the benefit of using the Rock Bar? -- The benefit of the Rock Bar is that it is a multipurpose gear storage case or training case. It is specially designed to hold extra gear without getting in your way due to its low profile design. The design allows it to be used on handle bars, under the top tube, under the down tube and bottom bracket, and more areas of the bike depending on the bike style and design. Hold extra gear such as tubes, food, 8 oz energy drinks or water, tools, etc. when on long rides or on the road less travelled. More than one Rock Bar can be used on a bike. -- The Rock Bar with weights is ideal for adding weight to the bike without affecting the handling of the bike. The Rock Bar Case is strong and can hold 7 pounds of steel weights by volume. Weights are available with the Rock Bar. 2. How big is it? -- The Rock Bar is 32 cm long (inside space of about 28 cm x 5 cm x 6 cm) and can hold items such as tubes up to a 2.1 width, small pump, tools, energy bars, 8 oz energy drinks, batteries and other items (not necessarily at the same time). What you use it for is up to you. 3. Where do I put the Rock Bar when attaching it to a bicycle? -- The Rock Bar typically is attached to the underside of a bicycle frame down tube or top tube, attached to a handle bar, and even attached to long seat posts and stems on folding bikes. The bike frame design will often dictate where the Rock Bar should be placed. Two or more Rock Bars can be attached to a bike at the same time depending on the bike design. 4. If I use a Rock Bar with weights, can the weight amount be changed or removed? -- The weight amount is completely adjustable and the weight is removable. The Rock Bar will hold the weights in a stable position. 5. Who should use the Rock Bar with weights? -- As an exercise tool the Rock Bar is for anyone seeking to gain strength and wants to incorporate another technique to help them do so. 6. What is the best location for weighted training if I use one Rock Bar? -- The ideal location is below the down tube and bottom bracket. This position gives the most neutral balance. The second popular location is under a top tube. This position will make the ride a little harder since the bike usually sways from side to side a bit when riding, and thus will require more muscle force to center the bike.