Women's Yellow Box Flax Flip-Flops Women's Yellow Box Comfort Flip Flops. Comfort your feet and feed your soul in the Yellow Box Flax! Perfect for relaxing by the water with a good book, these flip-flops feature an EVA foam cushioning footbed for plush comfort, durable synthetic uppers, and textured outsole for dependable traction. Nourish your mind and spirit when you relax in the Yellow Box Flax!