Zimmermann Ladies Bottoms. Fashion category - Jeans & Denim. SKU - 0426PF241-NEPTUNE. Color - Neptune. Zimmermann Illustration Barrel Cotton Denim Jeans. These washed denim jeans are made from cotton and feature a front button and zip fastening, belt loops, classic five pockets, a logo patch at the rear, and a tapered leg. 100% Cotton.