JBU by Jambu Women's Gwen Weather Ready Rain Shoe, Sky Blue, 11 Medium US Go to amazon.com Related posts The 10 best jambu shoes size 11 FeatureAll Terra TractionMemory Foam Footbed DescriptionMeet Gwen, a feminine slip-on duck shoe. From stamping in puddles to work to slushing around on the weekends, the Gwen is a great style for any climate.