While all of our kites are sold with about 100' of line we offer larger spools of line for those who want to put their kites waaaay up in the sky. All our line is braided dacron which is easy to handle and resists tangles. Use 30# to 50# line for small, light pulling diamonds and deltas; use 50# to 80# line for diamonds in heavy wind, large deltas, and small parafoils; use 80# to 110# line for large parafoils. We also offer a selection of add-on tails for those really windy days.