Built like the Pacific River Bags for bags, but proportioned for a cataraft, these clam-shell bags fit in the slot between frame bars and secure with straps at the strategic points. Heavy-duty mesh fabric allows water to drain through! This bag makes it easy to store gear at the last minute and get to it when you need it. 34" W x 20" front-to-back, 40" tall. Hangs down 10" from the top of the frame. Fits a frame opening 34" x 20", give or take a few inches.