Besides having a clean site, that makes it easy to shop and order? Use social media and PR to it's fullest.
We optimized a sports clothing site before. Here are a few tips to get you started
On Google+, find sporting communities, and join groups that your product fits into. For example, for winter gloves, you could join a ski, or outdoor community, and post info and links there. For this to be successful, make sure you post high quality content, not something that appears "sales driven". Nobody likes a spammy self-promoting online salesman.
Twitter, follow people and brands related to what you sell. Use URL shorteners so you can create a more convincing tagline with your link (twitter only allows 140 characters, so make it good)
Facebook is a bit tricky, but using a small ad campaign works really well to get things moving quickly, especially when just starting out. We set up high quality posts, and promote them using a small daily budget for 2-3 weeks at a time. Even with $5 per day budgets, we see between 200-400 likes per month. This is not "buying likes" since the people liking the posts have an active interest in the product or post info. Once you have them like you page, their news feed will update with posts from you in the future.
PR releases and digital marketing.
PR release can help increase awareness and traffic, if you post info that is actually newsworthy. Release a new type of material or product that redifines a niche? Write a release about it. Here is a blurb from our seo blog about press releases:
"Press Releases Without Actually Having Newsworthy Content
I know what you are thinking. "So if article submissions are out, I should do press releases instead." My answer would be, if you actually have something newsworthy, GO FOR IT! If you don't, then NO. A lot of businesses use press release sites simply to try and get links from news channels, and get their name out in front of the public by any means necessary. Here's the catch, you run a business, and kudos to your for doing so. According to Dun and Bradstreet there are 23 million and counting small businesses in the US as of 2010. This isn't saying that what you do or that the service you provide isn't newsworthy, I'm saying that merely existing alone doesn't qualify you. If you speak to any public relations agency, they will be quick to point out that there is much more to good PR than just a slew of press releases. Motion PR president Kimberly Eberl states that:
"Public relations is a conversation between a company and all of its different stakeholders. It encourages company transparency and works to the benefit of all parties. PR is about building awareness and leveraging relationships through various channels and markets."
If this sounds familiar, that's because it is. In essence, it's about link building. Creating press releases just for the sake of links alone is not a good practice, and can become expensive if done regularly. A good press release is one that can help other people. Remember, humans are social creatures, and when we find something that helps us, we share it. By having people share your information and providing something that is truly newsworthy and good, this can help your media relations be more effective, and believe me, the links will follow."
Hope this helps you get a good start!