This appeared on my Facebook feed. This is their website http://powerchews.com.au/Pages/products/ and it looks like some protein / workout supplement, that's supposed to taste good. As the samples are free, I figured why not. Just posting here in case anyone else wants some free samples. :)
Not sure when the deal expires, so I put a random date. It probably expired when it's ozbargained. Feel free to update as expired when it does.
"Power Chews" sounds more like a gym-going canine treat.