- RAINBOW SANDALS. 101LTSFB-SRBR. KIDS FLIRTY BRAIDY - SINGLE LAYER PREMIER LEATHER. SIERRA BROWN. Our kids are made with top grade nubuck leather for durability and comfort, they are a single layer but do not have an arch because little feet don't quite need them yet. We use a non-slip bottom sole, which is embossed with the Rainbow name.