It depends on your kite and how you plan to fly. Here’s a quick guide to help:

• Twisted polyester/nylon: Budget-friendly for small, single-line kites in light to moderate wind.
• Braided polyester (often called Dacron): More durable and stable than twisted; a popular all-around pick for single-line kites.
• Low-stretch HMPE (often called Dyneema/Spectra): Thin and responsive for sport/stunt kites where precise control matters.
• Dual-line sets: Come as matched pairs for stunt kites; look for equal length and labeled strength.

Match the line’s pound-test rating and length to your kite size and wind conditions. Handles, hoops, and reels on the site can make launch and recovery easier.

Most flyers call it kite line or flying line. You’ll also see related terms:

• Bridle: The short lines attached to the kite itself; your flying line clips or ties to the bridle.
• Winder/handle/reel/hoop: Tools used to hold and manage the line.
• Dual-line or sport line set: Two equal-length lines used for stunt kites.

Product pages typically list the line’s pound-test (strength) and length in feet. Choosing the right combination can make launches smoother and help your kite fly more steadily, especially in changing wind.

Purpose-made kite line is recommended because it’s designed for strength, visibility, and handling. Consider:

• Polyester (braided): Durable and stable for most single-line kites.
• HMPE (low-stretch): Great for sport/stunt kites where quick response helps.
• Cotton or basic twine: May work for very small, light kites in gentle wind, but it can stretch or break more easily.

Avoid fishing line, wire, or anything metallic—those materials can be hazardous and are not intended for kite flying. Choose a pound-test rating suitable for your kite and wind, and consider using gloves with higher-strength line to reduce friction on your hands.

It’s the control and tether line that connects you to your kite. Kite line is sold in different strengths (pound-test) and lengths, and in various constructions:

• Twisted: Entry-friendly and economical for small kites.
• Braided polyester: Durable with predictable stretch for smooth single-line flying.
• Low-stretch HMPE: Thinner and more responsive for sport/stunt kites.

Lines come on handles, hoops, reels, or stake winders to make winding easier. Selecting the right setup can help with launch, control, and storage, but conditions and kite type will influence the best choice for you.

Match strength to your kite size and the wind you expect. As a general guide:

• Small single-line kites: About 10–30 lb test for light-to-moderate wind.
• Medium single-line kites: Around 50–100 lb test for steadier power.
• Sport/stunt kites: Often 50–150 lb per line, depending on kite and wind.

Choosing the lightest suitable line can reduce drag and help the kite fly higher, while higher-test lines offer more margin in gusts but add weight. Check your kite’s suggestions if available, and consider local flying rules about line length and altitude. Inspect line regularly and replace it if it shows wear.