30 day challenges ideas template in Retro design. This design is in demand now. Grow your income by running a 30-day challenge for your customers, members or audience. This customizable 30 Day challenges Ideas Template comes in 4 sizes - US Letter, A4, 8 X 10 inches, and 6 X 9 inches. The template is easily editable in Canva. Personal use and Commercial use to grow your blog, website, social media following or your coaching practice.