Kurt Barton
Analyst · Citigroup.
Yes, Steven, this is Kurt. The gross margin drivers are very similar throughout the year, but yet, as I mentioned in some of my remarks, it has a bit of a difference in impact by quarter. So our biggest opportunity and biggest growth driver in gross margin will be, throughout the year, our transportation and freight. And in transportation and freight, it's both transitory or rate-related, where we are coming off of those higher costs, particularly in the ocean freight, but also the more sustainable is the structural where the new improvements in the supply chain, the distribution centers are driving down our stem miles. And even as we open up our tenth distribution center, we'll reoptimize the lanes and reduce stem miles, be able to optimize by finding the lowest better rates, and that happened with our Navarre, Ohio DC last year.
So those -- that will be the biggest driver. We'll start to lap in Q3, and heavily in Q4, some of the rate-related benefits. So it will begin to moderate on that aspect. But then on the other aspect of that is our cost management on our products. And there's really been a very disciplined strategic approach towards that, that began last year, but really, we started to see the benefit modestly in Q4. And our merchants and our vendors really partner together to drive down some of that cost.
And we're actually even creating some of that AUR deflation so that in our CUE categories, our key drivers, we're able to offer the best value and even better gross margin rate. And that's some of what the pressure that I mentioned on AUR is that we feel very confident that we're bringing the best prices in our categories, regardless of competition, and that's what's helping to really gain the market share. So for the back half of the year, transportation, cost management and lower cost drivers will contribute.
And then in the second half, the third item that will begin will be the supply chain benefits from the new distribution center. As the transportation costs are the highest one, that's why we've said the second half may be a slightly lower gross margin growth in the first half as we start to cycle it. But it's really been the main 3 things that will benefit throughout the year, but just beginning to less of a benefit on the transportation side in the second half.