Look at a vintage MZ Wallace Kate bag. I say vintage because MZW discontinued the style a year or so ago.
I have carried Kate for at least a decade. The bedford nylon handles rain and snow like a rock star. I can be carried shoulder or crossbody. The organizational pockets inside and out amazing. It's quite lightweight. I absolutely adore mine and it still looks brand new. My former boss calls it my Mary Poppins bag because it's like a magic satchel that holds everything.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.