RAINBOW SANDALS. WILLOW00-SRBR. THE WILLOW - DOUBLE LAYER PREMIER LEATHER. SIERRA BROWN. This whimsical sandal is the first of the cute fashionable options available in a Double Layer. Up until now cute has only been the standard single layer. Using the traditional double layer foot bed we reversed the folded strap and inset a cute three piece braid into the leather giving it a secure foundation but raised just enough to see the hand braided pattern.