The 5 x 11 size bag is great for regular size coffee mug with product in it, literature, samples, party giveaways, self promotion and more. The 3 x 7.5 size bag is perfect for larger samples, small hostess gifts, giveaways, small gift with purchase & more. Gusseted - These bags have triangular sides (gusseted) so they will expand to hold more contents. They will sit flat if you have items inside that are weighted or will sit up by themselves. Bags are also food safe.Bag background is clear. Consider adding a coordinating ribbon to your order.