A kayak is a small, narrow watercraft which is propelled by means of a double-bladed paddle. the word kayak originates from the greenlandic language, where it is the. One does not sit in a kayak; one wears a kayak. it’s difficult to brace, make sweep turns, and/or to roll a kayak if your hips, knees, feet, and butt are not in solid. Comprehensive review of an explorer inflatable kayak including insider tips, the pros, the cons and the best places to buy..