sentence: Modern kayaks come in a wide variety of designs and materials for specialized purposes.
sentences_before: A 'kayak' is a small boat that is driven by manpower. It typically has a covered deck, and a cockpit covered by a spraydeck. It is propelled by a double-bladed paddle by a sitting paddler. The kayak was used by the native Ainu, Inuit,  Aleut and Eskimo hunters in sub-Arctic regions of northeastern Asia, North America and Greenland.
concept_name: modern kayak
headings: Kayak
categories: Boats