I'm using the waterproof Axiom rear panniers right now cause our crazy weather mean I never know how much clothing to pack, Light raingear heavy raingear windbreaker vs. Waterproof breathable. When we get into our drier season (soon I hope) I will switch to the Nashbar day trekker panniers. I hate to leave without being sure to have what I deem is enough stuff. I"m a packrat so there ya go.