The Benno XXL Trunk Bag adds 170L of covered load carrying capacity to the top of the Boost E and Carry On racks when used with with High Rail or Platform Rail rack add-ons. Velcro closure adjusts to the size of the cargo, or can be left open like a basket for hauling taller items. - Volume: 170 liters - Dimensions: 50cm x 59cm x 25-66cm (W x L x H) - Can be used with High Rail or Platform Rail