GoBag Sidecar is the perfect way to hold even more on your hobby journeys! It's a heavy-duty, collapsible container that can hold anything from a large water bottle to painting lamps. Attaches easily, using the PALS / MOLLE webbing on the side of both the NEO and EVO bags. Can attach to either side, or buy two and put them on both! Measures 9"h x 4.5"w x .5"d when collapsed. Expands up to 5" deep when open.