Have the Apollo was well, and as noted, it doesn't fold up that tight. If you look closely at the photo on the link, you will see that it doubles up. So it doesn't fold flat, but in slightly bulky shape. But it is a full feature snorkel w/ a purge, which is quite nice. We had some inner tube material around so cut a little section to use it to secure the snorkel in folded position. Kept it secured for 4 days continuous, and it still returns to full snorkel shape. Only minor creases on the fold points, but it doesn't look structural.
My Zeagle full size snorkel easily comes apart at where the flexible silicone portion meets up with the upper hard plastic exhaust. Broken apart, it fits tightly in a Dive Rite two-zipper pocket (7.5" h x 10" w x 1/2" d).
My Zeagle full size snorkel easily comes apart at where the flexible silicone portion meets up with the upper hard plastic exhaust. Broken apart, it fits tightly in a Dive Rite two-zipper pocket (7.5" h x 10" w x 1/2" d).