Rajkumar to the rescue!
Rajkumar, rubberisers to the 21st Century, are making glorious little Grasshoppers out of a fine rubberised fabric (which they make), navy on the outside, (pale) yellow inside.
Did I say Grasshoppers? Well probably Friesennerz to the classical enthusiast, translating into MinkyMacs for us in the UK (who always forget how many ens and who are really frightened by terminal zeds).
Single-texture material, navy blue to the world, gentle yellow rubberising to the inner person. Expertly sewn, seams taped with panache. Zip closure: unisex. Velcro wrist tabs. Integral hood with drawstring.