These are on sale for $19.99. Use the following codes to bring them down to $17.99 with FS: CLOG10 and SHIPCROCS. Also, if you sign up for their newsletter they will send you a code for 20% off (which you can use instead of CLOG10).

http://www.crocs.com/crocs-chameleon...cgid=sale-1999

http://www.crocs.com/crocs-chameleon...gid=sale-1999#

http://www.crocs.com/crocs-chameleon...cgid=sale-1999