I have that same color in large. I love my snapped, they are awesome for nights but can also be used for days (which I can't say of all my night diapers). The green is fantastic in person! At first it was a little dark but brightened up (like the one in your pic) after a couple washes.
Re: Ordered a SBISH fitted
https://hyenacart.com/Spots_corner/st/200001/93213/Med-sustainablebabyish-overnight-bamboo-fitteds-EEUC
I got one if these.
Edit: So a med sized snap
DS1: 10/2005 DS2: 01/2007 DS3: 09/2010