One bit of unsolicited advice: consider moving your copy to be above the fold. At least on my screen (1920 x 1080, 125% font), all I see when I first load the page is the nav bar and a picture of people rock climbing -- no text or any indication as to what the product is. I had to scroll down to learn what the website was about, which creates more friction for me as someone curious about your website. Also, consider adding some customer success stories or other forms of validation to your landing page. I am a novice climber, but I'm initially skeptical of using a new chalk, so seeing some form of validation would help me get over that hump. Maybe copy part of your friend's review [1] to the landing page, as he seems to have great things to say about the chalk.
[1] https://chalkrebels.com/blogs/news/crystal-chalk-in-action