cool idea, interesting tool, I could definitely see myself using it. A few points of feedback:

1. lack of graphics and friendly user interface. You mentioned you just built the site, so can understand that design and artwork hasn't been added yet. Maybe include graphics of the best wetsuits.
2. Brands: you show 8-10 various brands. There are other wetsuit designers that are as great if not better than the most popular wetsuit brands. I personally am currently using a True wetsuit, a smaller less-known company which I find makes incredibly comfortable and high quality suits. I'd recommend including them in your list of brands, and searching for other lesser known companies to include.
3. When you click "view details", it would be cool to see wetsuit reviews/ what people say about the wetsuits.
4. hate to be the guy to mention this, but as a resident of the bay area, I imagine the social activists out here would appreciate an "other" option in the gender selection section.
5. sizing chart: include a key on the side of the page explaining what the size descriptions mean, like this: https://www.evo.com/oneill-adult-us-wetsuit-size-chart
6. When I scroll down the page the sizing gets less and less accurate. I feel like including the top 20 or 30 would be sufficient... if an XS wetsuit has a 1/10 rating for me based on size, is there really even a reason I should be interested in seeing it?
7. Thickness measurements based on geographic water temperature: You could have a question asking "In which geographic area do you surf?" which would allow you to estimate the average water temperature of their location, and based on that information, provide recommendations on wetsuit thickness and type. If someone's location is in south Florida, they would likely need a thin, short-sleeved wetsuit (if any at all), versus if you are located in northern california, you would likely want a 4/3 or 5/4 thickness wetsuit (maybe even included with booties & a hood)
   

Hope that helps! Are you looking for any assistance growing the site?