The Revelate Designs Tangle Frame Bag is hands down the best frame bag on the market. Easy to mount with plenty of storage, this frame comes in 3 sizes and is great for carrying anything, anywhere.
From Revelate Designs:
The Legendary Tangle™ frame bag is the original Half Frame bag, it offers substantial cargo capacity in a sleek, rectangular shape that fills unused space on your bike. Stash your food, tools, and a mini pump and you’re ready for any adventure, big or small. Build quality is second to none, we've obsessed and honed the details so you don't have too.
Tangles comes in three sizes:
Please check sizing chart for detailed dimensions and compare to measurements taken from your frame.
To check that the Tangle leaves room for water bottle mounts, measure the vertical height from the bottle top to the bike’s top tube and compare to the the listed bag height. A little bit of overlap is ok, side-entrance water bottle cages are preferable.
Made in the USA with domestic and imported materials.
I researched the Tangle and other bags thoroughly before deciding on this one. It is everything I was lead to expect and I'm extremely happy with it. My large easily takes a couple of spare 37 tubes, tools, patches, Kryptonite mini messenger lock, Waterproof jacket, pants and seat cover, extra small lights, glasses and various other bits and pieces... and all of that without over-packing or bulging, and still some space to spare. Brilliant.
I used this bag to bike from Madison, WI to Minneapolis and back for a total of about 750 miles. Got caught in the rain 3 times for at least two hours each and the bag looks brand new. I would highly recommend and will use again to go across country summer of 2018.