HQRP 2-Pack 700c x 28/38C 28" x 1.1/1 1/8 / 1.2/1 1/4 Presta (French) Valve Bike Bicycle Tire Inner Tube Plus UV Meter HQRP&reg; 2-Pack Bike Tubes Presta (French) Valve plus HQRP&reg; UV Meter; Tube size: 700*28/38C; 200 days warranty!