During a break in the filming for The Amazing Spiderman 2, Andrew Garfield was seen buying some dog food for Ren, his golden retriever. He carries two dog food trays in his hands. The grays are light purple and have a design of a bone on the bottom of the cup. One is filled with dog treats, the other is empty. He wears a gray t-shirt with Thomas the Tank Engine with his eyes closed (sleeping), light gray nike workout pants, and nike sneakers.
Later, Andrew Garfield changed into a red raincoat and dark red pants and takes Ren for a walk, before getting back to filming.
I found the design on his t-shirt here on stencilrevolution and here (http://www.banksy.co.uk/shop/images/shop%20large/thomas.jpg)