Mussel shells are common and fun to find while beachcombing on shores around the world. Purple Pearly Mussel sticker is adorably cute and small at about 2.5 inch. The unique shape of the shell drawing reminds me of a butterfly or a heart.  It is made out of vinyl which means you can stick this on a waterbottle and rest secure that it won't just peel off. It holds up great to water and weather. 
 
Find similar shell and star designs in our Beachcomber Collection.