25 All New Adult Coloring Book, Sloth Designs TO COLOR This adult coloring book has over 25 Amazing Sloth Animal Designs and provides hours of stress relief through creative expression. It features Unique Zen Pattenrs, with Zentangle, Mandalas and Garden Designs. Coloring tools like marker, pencils and Primsmacolor can be used without bleed-through. Designs range in complexity and detail from beginner to expert-level.