Check out Lifetime's selection of kayaks, paddle boards and everything water sports equipment! Lifetime kayaks are the most stable sit-on-top kayaks in the world. Lifetime kayaks are built from high-density polyethylene plastic, which makes them durable and lightweight for both adult and kids kayaks. Lifetime Paddleboards are constructed from high-density polyethylene plastic for lightweight and durability. Shop directly from Lifetime Products and get free shipping on our full selection of water sports equipment.