At first sight it looks enormous. Its a bit fiddly and caused myself some pain when getting the hang of it, had some interesting moments. If you get one practice inserting, emptying etc when flow is light :p then theres no real mess if you cant do it properly
but once youve got it sorted its fine and the fiddlyness is nothing more than a tampon
but its now my third period with it and for this one ive worn no other protection and not had a single leak. It holds about 2x as much as a super tampon , this in real life for me means i empty it twice a day. One bad thing is that by the end of period the cup has an weak but odd smell, but i soak it in baby bottle sterilising solution and its good as new.
They are for sale in boots for about £20 and it comes with a little storage bag. If youve got any questions or anything feel free to PM me