Colorverse Hubble Zoom (65ml+15ml same color) Bottled InkAs part of the Spaceward series, this set includes two bottles of the same ink color. The 65 ml bottle is a good size for your desk at home, while the 15 ml bottle is perfect for travel or sharing with friends. The bottles feature delightful teardrop shaped bases that look lovely on display. They come nestled in a cardboard box decorated with constellations.