The Woho mini top-tube bag is designed to be attached to both the top frame tube and the inner tube. It's a mini pannier for just the essentials you need on the road, leaving the bike minimalist in style without distracting from its design. Volume : 0.43 Liter Weight: 41g / 1.44oz Dimensions(L x W x H): 13 x 11 x 6 cm / 5.12" x 4.33" x 2.36"