You can go to the nearest climbing store and give them some samples to sell for free. Tell them if they sell and they want to order more, call you back. This

You can go to the nearest climbing store and give them some samples to sell for free. Tell them if they sell and they want to order more, call you back. This is a risk free way for the climbing store to earn 100% profit. In return, you get to test out the market to see if there is a need for your product. The only risk is that they have to trust you and you have to prove that your products does not have any chemicals that harms consumers. Perhaps have your products verified in a lab.