Aim high: 54% lighter, 2X puncture resistance and 50% smaller packed size compared to standard rubber tubes. It's why the Tubo BMX jumps to new heights. It''s made for 20" BMX tires from 1.8" and 2.4" and 1 1/8" 1 3/8 widths and its low weight and super toughness are made to hit the park.