The Old Navy flip flops in watermelon feature a solid blue character with a slip-on closure for easy wear. These sandals have a low heel height and a flat heel style, making them lightweight and perfect for casual occasions during the summer season. Made of rubber, these thong-style flip flops are designed for comfort and are available in sizes 9 and 10, each priced at $7.50. Old Navy Flip Flops Watermelon Sizes 9 (5), 10 (4) $7.50 EACH SANDAL