Review on BV Bicycle Y-Series Strap-On Bike Saddle Bag/Bicycle Seat Pack Bag, Cycling Wedge with Multiple Size Choices by Raymond Gray

I bought a medium to large sized bag. Saved the medium and returned the large. Quality seems great after 3 rides. For a medium sized bag I can carry a spare inner tube, two Rhino tire levers, a pressure gauge, my mini pump, repair kit, multi tool, car keys and some money/debit card. Pretty neat but worked great. The bag does not bulge and does not touch the hips when pedaling. Although I returned the large bag, I was able to carry the above items with an additional spare tube (two tubes total) and still had room for other small items. I didn't need the whole room so I returned it. The large bag fitted perfectly under the saddle, as did the middle one. It didn't stick out much and didn't interfere with pedaling. Hope that helps!