Windspeed Ikon 1.6m Kite is great for older kids and adults.

Tough, colourful and fast, this Kites and Flags features the following:
Ripstop & Fibreglass construction
35kg Line on Handle
Bigger sail gives extra power
Teens and adults will pay the extra for this
Ages: 10 years to Adult
Size: 1.6m Wingspan
Winds: Medium to Fresh