21 Hybrid Spinner Carryon Navy/Gray. The Athalon 21 Hybrid Travelers wheeling carry-on with spinner wheels features solid colors and bold graphic prints on poly/nylon fabric with contrast piping, 4 wheel spinner in-line skate wheels for easy mobility, and ergonomic handles on the top, front, and side that make it easy to lift on and off luggage carts and baggage carousels.