I am a graphic designer and thought the printing and assembly of the bag turned out great. If you understand that the substrate fabric is not bright white, then you will realize that "brilliant" or bright colors are not going to pop out. So, I recommend if you are designing your own, to use cyan, magenta, yellow, and black color builds to achieve the color you are looking for in a generic color space.
Thanks so much. The size is perfect for bringing my lunches to work without fearing I am hogging up the shared refrigerator space.
Our development team insisted that we inform customers that our system is RGB colorspace based and we can not confirm the accuracy of CMYK uploads. We are glad to hear that it worked for you.