Here are some I love, with a variety of price options and style differences.
From Topshop www.topshop.com
My trip over the summer to Brooklyn brought me to this great store. I bought this exact bag and it has served me well. www.brookylnindustries.com
A wide selection can be found for you local Bay Area shopper. Flight 001 in Hayes Valley has a wide array of modern travel accessories for the modern fashionista. www.flight001.com
For those with a slightly higher budget. Nothing says fashion forward like a weekender from the incredible collection of Marc Jacobs. www.shopbop.com
Happy Travels! How can you not travel well with these finds??